API Reference

This method sends an SMS or MMS message to any number of recipients. MMS messages must each be no larger than 1MB in size.

Endpoint

POST:
https://messaging.esendex.us/Messaging.svc/SendMessage

Syntax

SendMessage(Request)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
Attachments	Attachments for the message. The message must use MMS to have attachments. This value can include either URLs or Media IDs. (Media IDs are for files that you have uploaded to your license key.)	Array of String values	True, when sending a message without a Body.	17772, https://esendexusa.com/img/docs/example.jpg
Body	Text content for the message.	String	True, when sending a message without Attachments.	This is a sample message.
Concatenate	The API automatically breaks up long SMS messages into fragments. Use concatenation to reunite the fragments as a single message on the recipient’s device. Note that fragments and concatenation are not used with MMS.	Boolean	False	True
From	Number to send the message from. If unspecified, one of your numbers will be chosen automatically. (Contact Esendex to add a number to your account.)	String	False	7575550000
IsUnicode	Whether the message should be sent using Unicode encoding. Note that all MMS messages support Unicode.	Boolean	False	True
LicenseKey	Your license key.	GUID	True	00000000-0000-0000-0000-000000000000
PostbackUrl	URL to send postbacks to.	String	False	http://www.example.com/postback.aspx
ReferenceID	Custom ID of your choice. You can use this ID to filter incoming messages when you read them.	String	False	123
ScheduledDateTime	UTC date/time when message will send. Specified as milliseconds from the epoch of 1970-01-01T00:00:00Z.	DateTime	False	/Date(1682439497785)/
Subject	Subject line for the message.	String	False	Messaging Test
To	Recipient number.	Array of String values	True	7575559999
UseMMS	Whether to send as an MMS message. MMS is required when sending attachments.	Boolean	True	True

Response

Returns: Array of OutgoingMessageResponse objects

This method reads the status of an incoming or outgoing message.

Endpoint

GET:
https://messaging.esendex.us/Messaging.svc/ReadMessageStatus?LicenseKey={LICENSEKEY}&MessageId={MESSAGEID}

Syntax

ReadMessageStatus(LicenseKey, MessageID)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
LicenseKey	Your license key.	GUID	True	00000000-0000-0000-0000-000000000000
MessageID	Unique ID for message.	GUID	True	d73cd74b-8687-4701-8f03-f75b4d4d860d

Response

Returns: OutgoingMessageResponse object

This method reads incoming messages. You can retrieve all incoming messages or only unread messages.

Endpoint

POST:
https://messaging.esendex.us/Messaging.svc/ReadIncomingMessages

Syntax

ReadIncomingMessages(Request)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
EndDate	UTC date/time of newest messages to read. Specified as milliseconds from the epoch of 1970-01-01T00:00:00Z.	DateTime	False	/Date(1682439497785)/
IncomingMessageID	Unique ID of the incoming message.	GUID	False	1627aea5-8e0a-4371-9022-9b504344e724
LicenseKey	Your license key.	GUID	True	00000000-0000-0000-0000-000000000000
OutgoingMessageID	Unique ID of the outgoing message.	GUID	False	1627aea5-8e0a-4371-9022-9b504344e724
PageNumber	Number of the page to retrieve.	Int	False	1
PageSize	Number of incoming messages per page.	Int	False	20
ReferenceID	Unique ID that you assigned to the sent message.	String	False	123
StartDate	UTC date/time of oldest messages to read. Specified as milliseconds from the epoch of 1970-01-01T00:00:00Z.	DateTime	False	/Date(1682439497785)/
UnreadMessagesOnly	Whether to retrieve all incoming messages or only incoming messages that are unread.	Boolean	False	false

Response

Returns: Array of IncomingMessageResponse objects

Code Samples

You can use any programming language you want with our API, as long as it can make a REST or SOAP call. Here are examples for some of the most common platforms.

This method cancels all messages scheduled for a future time or date. It has no effect on messages that have already been sent or queued.

Endpoint

POST:
https://messaging.esendex.us/messaging.svc/CancelAllMessages

GET:
https://messaging.esendex.us/messaging.svc/CancelAllMessages?LicenseKey={LICENSEKEY}

Syntax

CancelAllMessages(LicenseKey)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
LicenseKey	Your license key.	GUID	True	00000000-0000-0000-0000-000000000000

Response

Returns: Boolean

Description: Whether the cancellation was successful or not.

This method cancels a message scheduled for a future time or date. It has no effect on messages that have already been sent or queued.

Endpoint

POST:
https://messaging.esendex.us/messaging.svc/CancelMessage

GET:
https://messaging.esendex.us/messaging.svc/CancelMessage?MessageID={MESSAGEID}

Syntax

CancelMessage(MessageID)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
MessageID	Unique ID of the message to cancel.	GUID	True	1627aea5-8e0a-4371-9022-9b504344e724

Response

Returns: Boolean

Description: Whether the cancellation was successful or not.

This method unsubscribes one or more phone numbers from a license key. Unsubscribed numbers will no longer receive any messages you send.

Endpoint

POST:
https://messaging.esendex.us/Messaging.svc/AddUnsubscribedNumbers

Syntax

AddUnsubscribedNumbers(LicenseKey, PhoneNumbers)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
LicenseKey	Your license key.	GUID	True	00000000-0000-0000-0000-000000000000
PhoneNumbers	The phone numbers you want to unsubscribe.	Array of String values	True	7575559999

Response

Returns: Array of UnsubscribedNumberResult objects

This method returns a list of all recipient numbers who have opted out of your messaging campaign.

Endpoint

GET:
https://messaging.esendex.us/Messaging.svc/GetUnsubscribedNumbers?LicenseKey={LICENSEKEY}

Syntax

GetUnsubscribedNumbers(LicenseKey)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
LicenseKey	Your license key.	GUID	True	00000000-0000-0000-0000-000000000000

Response

Returns: Array of UnsubscribedNumber objects

This method resubscribes one or more phone numbers from a given license key.

Endpoint

POST:
https://messaging.esendex.us/Messaging.svc/RemoveUnsubscribedNumbers

Syntax

RemoveUnsubscribedNumbers(LicenseKey, PhoneNumbers)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
LicenseKey	Your license key.	GUID	True	00000000-0000-0000-0000-000000000000
PhoneNumbers	One or more phone numbers to resubscribe.	Array of String values	True	7575559999

Response

Returns: Array of UnsubscribedNumberResult objects

This method adds a media file to a license key using the media’s binary representation.

Endpoint

POST:
https://messaging.esendex.us/Messaging.svc/CreateMediaFromContent

Syntax

CreateMediaFromContent(Request)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
Base64EncodedContent	Content of the media file to create. This is binary data that is encoded as a string of base-64 digits.	String	True
FileName	Name of the media file to create.	String	True	MonkeyPic.jpg
LicenseKey	Your license key.	GUID	True	00000000-0000-0000-0000-000000000000
Tags	Category of the media file.	Array of String values	False	animal

Response

Returns: MediaMetadata object

This method adds a media file to a license key from the media’s URL.

Endpoint

POST:
https://messaging.esendex.us/Messaging.svc/CreateMediaFromUrl

Syntax

CreateMediaFromUrl(Request)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
FileName	Name of the media file to create.	String	True	MonkeyPic.jpg
LicenseKey	Your license key.	GUID	True	00000000-0000-0000-0000-000000000000
Tags	Category of the media file.	Array of String values	False	animal
Url	Web location of the file to create.	String	True	https://esendexusa.com/img/docs/example.jpg

Response

Returns: MediaMetadata object

This method retrieves the binary representation of a media file that was added to your license key. This is binary data that is encoded as a string of base-64 digits.

Endpoint

GET:
https://messaging.esendex.us/Messaging.svc/GetMedia?LicenseKey={LICENSEKEY}&MediaId={MEDIAID}

Syntax

GetMedia(LicenseKey, MediaID)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
LicenseKey	Your license key.	GUID	True	00000000-0000-0000-0000-000000000000
MediaID	Unique ID of the media file.	Long	True	12345678

Response

Returns: String

Sample:
iVBORw0KGgoAAAANSUhEUgAAAAgAAAAICAIAAABLbSncAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAAGdYAABnWARjRyu0AAAASSURBVBhXY3gro4IVDSkJGRUAmbtLQUb26xsAAAAASUVORK5CYII=

This method retrieves information about your media files.

Endpoint

POST:
https://messaging.esendex.us/Messaging.svc/GetMediaInfo

Syntax

GetMediaInfo(Request)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
EndDate	UTC date/time of newest media to retrieve.	DateTime	False	/Date(1682439497785)/
FilenamePattern	Name of the media.	String	False	Monkey.jpg
FileType	File type of the media.	String	False	.jpg
IncomingMessageId	Unique ID of the incoming message with the media.	GUID	False	1627aea5-8e0a-4371-9022-9b504344e724
LicenseKey	License key associated with the media.	GUID	True	00000000-0000-0000-0000-000000000000
MaximumFileSize	Largest file size of the media.	Long	False	97465
MediaId	Unique ID of the media.	Long	False	12345678
MinimumFileSize	Smallest file size of the media.	Long	False	97465
OutgoingMessageID	Unique ID of the outgoing message with the media.	GUID	False	1627aea5-8e0a-4371-9022-9b504344e724
PageNumber	Number of the page to retrieve.	Int	False	1
PageSize	Number of media files per page.	Int	False	10
StartDate	UTC date/time of oldest media to retrieve.	DateTime	False	/Date(1682439497785)/
Tags	Category of the media.	Array of String values	False	animal

Response

Returns: MediaReply object

This method removes a media file from a license key.

Endpoint

GET:
https://messaging.esendex.us/Messaging.svc/RemoveMedia?LicenseKey={LICENSEKEY}&MediaId={MEDIAID}

Syntax

RemoveMedia(LicenseKey, MediaID)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
LicenseKey	Your license key.	GUID	True	00000000-0000-0000-0000-000000000000
MediaID	Unique ID of the media file to remove.	Long	True	12345678

Response

Returns: Boolean

Description: Whether the removal was successful or not. This will be true even when the media does not exist.

This method assigns one or more custom keywords to a license key.

Endpoint

POST:
https://messaging.esendex.us/Messaging.svc?wsdl/AssignKeyword

Syntax

AssignKeyword(Request)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
LicenseKey	Your license key.	GUID	True	00000000-0000-0000-0000-000000000000
SMSKeywords	The keywords you want to add to the license key.	Array of KeywordRequestInfo objects	True

Response

Returns: SMSKeywordResponse object

This method returns all custom keywords currently assigned to a license key.

Endpoint

GET:
https://messaging.esendex.us/Messaging.svc/GetKeywords?LicenseKey={LICENSEKEY}

POST:
https://messaging.esendex.us/Messaging.svc/GetKeywords

Syntax

GetKeywords(LicenseKey)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
LicenseKey	Your license key.	GUID	True	00000000-0000-0000-0000-000000000000

Response

Returns: GetKeywordsResponse object

This method returns all system keywords for a given number.

Endpoint

GET:
https://messaging.esendex.us/Messaging.svc/GetSystemKeywordResponses?LicenseKey={LICENSEKEY}&Number={NUMBER}

Syntax

AssignKeyword(LicenseKey, Number)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
LicenseKey	Your license key.	GUID	True	00000000-0000-0000-0000-000000000000
Number	One of your numbers.	String	True	7575550000

Response

Returns: SystemKeywordResponses object

This method removes one or more custom keywords assigned to a given license key.

Endpoint

POST:
https://messaging.esendex.us/Messaging.svc/RemoveKeyword

Syntax

RemoveKeyword(Request)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
LicenseKey	Your license key.	GUID	True	00000000-0000-0000-0000-000000000000
SMSKeywords	One or more keyword requests.	Array of KeywordRequestInfo objects	True

Response

Returns: RemoveKeywordResponse object

This method returns the postback settings for a license key.

Endpoint

GET:
https://messaging.esendex.us/Messaging.svc/GetPostbackSettingsForLicenseKey?LicenseKey={LICENSEKEY}

Syntax

GetPostbackSettingsForLicenseKey(LicenseKey)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
LicenseKey	Your license key.	GUID	True	00000000-0000-0000-0000-000000000000

Response

Returns: Array of PostbackSettingsResponse objects

This method returns postback settings for a number.

Endpoint

GET:
https://messaging.esendex.us/Messaging.svc/GetPostbackSettingsForPhoneNumber?LicenseKey={LICENSEKEY}&PhoneNumber={PHONENUMBER}&Country={COUNTRY}

Syntax

GetPostbackSettingsForPhoneNumber(LicenseKey, PhoneNumber, Country)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
LicenseKey	Your license key.	GUID	True	00000000-0000-0000-0000-000000000000
PhoneNumber	Number to check for postback settings.	String	True	7575550000
Country	Origin country for number.	String	True	US

Response

Returns: Array of PostbackSettingsResponse objects

This method retrieves postback settings for a given license key.

Endpoint

GET:
https://messaging.esendex.us/Messaging.svc/SetPostbackEnabledForLicenseKey?LicenseKey={LICENSEKEY}&PostbackType={POSTBACKTYPE}&Enabled={ENABLED}

Syntax

SetPostbackEnabledForLicenseKey(LicenseKey)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
LicenseKey	Your license key.	GUID	True	00000000-0000-0000-0000-000000000000
PostbackType	Indicates whether the postback URL is used for incoming messages, outgoing messages, or delivery receipts.ValueDescription0 – AllUse the postback URL for all messages.1 – DeliveryReceiptUse the postback URL for delivery receipts.2 – IncomingMessageUse the postback URL for incoming messages.3 – OutgoingMessageUse the postback URL for outgoing messages.	Enum	True	0 – All
Enabled	Indicates whether the postback URL is enabled on the number.	Boolean	True	True

Response

Returns: SetPostbackEnabledForLicenseKeyResponse object

This method enables or disables a postback that you have assigned to a given number.

Endpoint

GET:
https://messaging.esendex.us/Messaging.svc/SetPostbackEnabledForPhoneNumber?LicenseKey={LICENSEKEY}&PhoneNumber={PHONENUMBER}&Country={COUNTRY}&PostBackType={POSTBACKTYPE}&Enabled={ENABLED}

Syntax

SetPostbackEnabledForPhoneNumber(LicenseKey, PhoneNumber, Country, PostbackType, Enabled)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
LicenseKey	Your license key.	GUID	True	00000000-0000-0000-0000-000000000000
PhoneNumber	Number for which to enable a postback URL.	String	True	7575550000
Country	Origin country of the number.	String	True	US
PostbackType	Indicates whether the postback URL is used for incoming messages, outgoing messages, or delivery receipts.ValueDescription0 – AllUse the postback URL for all messages.1 – DeliveryReceiptUse the postback URL for delivery receipts.2 – IncomingMessageUse the postback URL for incoming messages.3 – OutgoingMessageUse the postback URL for outgoing messages.	Enum	True	0 – All
Enabled	Indicates whether the postback URL is enabled on the number.	Boolean	True	True

Response

Returns: Enum

Sample:
0 – NoError

Value	Description
0 – NoError	The update was successful.
1 – InvalidLicenseKey	The requested license key is invalid.
2 – InvalidUrl	The requested URL is invalid.
3 – InvalidPhoneNumber	The requested phone number is invalid.
4 – InvalidPostbackType	The requested postback type is invalid.
5 – NotFound	The requested resource was not found.
6 – InvalidCountry	The requested country is invalid.

This method assigns a postback URL to a given license key.

Endpoint

GET:
https://messaging.esendex.us/Messaging.svc/SetPostbackUrlForLicenseKey?LicenseKey={LICENSEKEY}&PostBackType={POSTBACKTYPE}&Url={URL}

Syntax

SetPostbackUrlForLicenseKey(LicenseKey, PostbackType, Url)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
LicenseKey	Your license key.	GUID	True	00000000-0000-0000-0000-000000000000
PostbackType	Indicates whether the postback URL is used for incoming messages, outgoing messages, or delivery receipts.ValueDescription0 – AllUse the postback URL for all messages.1 – DeliveryReceiptUse the postback URL for delivery receipts.2 – IncomingMessageUse the postback URL for incoming messages.3 – OutgoingMessageUse the postback URL for outgoing messages.	Enum	True	0 – All
Url	The URL that information will be posted to.	String	True	http://www.example.com/postback.aspx

Response

Returns: Enum

Sample:
0 – NoError

Value	Description
0 – NoError	The update was successful.
1 – InvalidLicenseKey	The requested license key is invalid.
2 – InvalidUrl	The requested URL is invalid.
3 – InvalidPhoneNumber	The requested phone number is invalid.
4 – InvalidPostbackType	The requested postback type is invalid.
5 – NotFound	The requested resource was not found.
6 – InvalidCountry	The requested country is invalid.

This method assigns a postback URL to a given number.

Endpoint

GET:
https://messaging.esendex.us/Messaging.svc/SetPostbackUrlForPhoneNumber?LicenseKey={LICENSEKEY}&PhoneNumber={PHONENUMBER}&Country={COUNTRY}&PostBackType={POSTBACKTYPE}&Url={URL}

Syntax

SetPostbackUrlForPhoneNumber(LicenseKey, PhoneNumber, Country, PostbackType, Url)

Request Parameters

Parameter Name	Description	Data Type	Required	Sample Value
LicenseKey	Your license key.	GUID	True	00000000-0000-0000-0000-000000000000
PhoneNumber	Number for which to enable a postback URL.	String	True	7575550000
Country	Origin country of the number.	String	True	US
PostbackType	Indicates whether the postback URL is used for incoming messages, outgoing messages, or delivery receipts.ValueDescription0 – AllUse the postback URL for all messages.1 – DeliveryReceiptUse the postback URL for delivery receipts.2 – IncomingMessageUse the postback URL for incoming messages.3 – OutgoingMessageUse the postback URL for outgoing messages.	Enum	True	0 – All
Url	The URL that information will be posted to.	String	True	http://www.example.com/postback.aspx

Response

Returns: Enum

Sample:
0 – NoError

Value	Description
0 – NoError	The update was successful.
1 – InvalidLicenseKey	The requested license key is invalid.
2 – InvalidUrl	The requested URL is invalid.
3 – InvalidPhoneNumber	The requested phone number is invalid.
4 – InvalidPostbackType	The requested postback type is invalid.
5 – NotFound	The requested resource was not found.
6 – InvalidCountry	The requested country is invalid.

Indicates the status of an outgoing message. This value is included in the SMSDeliveryReceiptPostback and MMSDeliveryReceiptPostback types.

Type: Enum

Possible Values

Value	Description
000 – DeliveredToDevice	The message was delivered to the recipient.
003 – DeliveredToCarrier	The message was delivered to the carrier.
004 – Accepted	The carrier accepted the message.
005 – UndelivOrDeleted	The carrier attempted but failed to deliver the message. The destination device might be out of network coverage, switched off, or roaming out of the carrier’s supported network.
008 – Expired	The message expired at the carrier.
023 – Rejected	The carrier rejected the message.
028 – SenderExceededCarrierThrottle	The message sender has exceeded the carrier’s maximum rate.
029 – RecipientExceededCarrierThrottle	The message recipient has exceeded the carrier’s maximum rate.
030 – SenderAndRecipentExceededCarrierThrottle	The message sender and recipient have exceeded the carrier’s maximum rate.
032 – InvalidMessageFormatOrTextMsgContentSizeExceeded	The message is invalidly formatted or too large.
090 – BadAddress	The destination number is not a valid number, so the carrier rejected the message.
091 – InvalidRouting	The carrier has not approved or provisioned the sending number.
999 – CarrierErrorUnknown	The carrier failed to send the message for an unknown reason.

This response is returned by the GetKeywords method.

Type Properties

Property Name	Description	Data Type	Sample
ReturnCode	Return code for the operation. This is always 0 - NoError.	Enum	0 – NoError
SMSKeyword	All of the custom keywords assigned to the license key.	Array of KeywordResponseInfo objects

This response is returned by the ReadIncomingMessages method.

Type Properties

Property Name	Description	Data Type	Sample
Attachments	Media IDs for the message’s attachments.	Array of Long values	10000001,10000005
From	Number used to send the message.	String	7575550000
IncomingMessageID	Unique ID of the incoming message.	GUID	1627aea5-8e0a-4371-9022-9b504344e724
OutgoingMessageID	Unique ID of the outgoing message.	GUID	1627aea5-8e0a-4371-9022-9b504344e724
Payload	Incoming message content.	String	Thank you for your message.
ReceivedDate	UTC date/time when the incoming message was received.	DateTime	/Date(1682439497785)/
Subject	Subject of the incoming message.	String	Reply
To	Recipient number.	String	7575559999
Udh	Header that shows the number of concatenated messages in their correct order.	Array of Byte values	81,109,70,122,90,83,65,50,78,67,66,84,100

This type is included in the GetKeywordsResponse, RemoveKeywordResponse, and SMSKeywordResponse types.

Type Properties

Property Name	Description	Data Type	Sample
EntryDate	UTC date/time when keyword was added.	DateTime	/Date(1682439497785)/
Keyword	Keyword value.	String	Keyword27
ReturnCode	Return code for this keyword.ValueDescription0 – NoError1 – KeywordAddedWhen assigning a keyword, the keyword was successfully added.2 – KeywordAlreadyInUseWhen assigning a keyword, the keyword is already being used.3 – ShortCodeNotAssignedToKey4 – LicenseKeyInvalid5 – KeywordInvalid6 – ShortCodeInvalid7 – KeywordRemovedWhen removing a keyword, the keyword was successfully removed.8 – KeywordNotFound9 – InternalError	Enum	0 – NoError
ShortCode	Short code that this keyword is assigned to.	String	10101

This type is returned by the CreateMediaFromContent and CreateMediaFromUrl methods. It is also included in the MediaReply type.

Type Properties

Property Name	Description	Data Type	Sample
FileDate	UTC date/time when the media was created.	DateTime	/Date(1682439497785)/
FileName	Name of the media file.	String	MonkeyPic.jpg
FileSize	Size of the media file, in bytes.	Long	97465
MediaId	Unique ID of the media file.	Long	12345678
MimeType	Media type (MIME type) of the file.	String	image/jpeg
Tags	Category of the media file.	Array of String values	Monkey, Animal

This value is included in the OutgoingMessageResponse type.

Type: Enum

Possible Values

Value	Description
0 – Hold	Message is on hold and will not be processed until set to ‘Ready’.
200 – Sent	Message sent successfully. HTTP equivalent: 200 – OK
201 – Ready	Message is queued, ready to be processed. HTTP equivalent: 201 – CREATED
202 – Processing	Message is being processed by Esendex. HTTP equivalent: 202 – ACCEPTED
400 – InvalidDID	The number provided is invalid, wrong format, or it cannot send to the destination. HTTP equivalent: 400 – BAD REQUEST
401 – InvalidLicenseKey	The provided license key is invalid. HTTP equivalent: 401 – UNAUTHORIZED
402 – AccountSuspended	The account has been suspended. HTTP equivalent: 402 – PAYMENT REQUIRED
403 – StopOnPhoneNumber	No messages can be sent to the destination phone number from the license key. HTTP equivalent: 403 – FORBIDDEN
404 – MissingDIDOrInvalidMessageID	Proper number could not be established or MessageID provided is invalid. HTTP equivalent: 404 – NOT FOUND
405 – InvalidDateTime	ScheduledDateTime not in UTC. HTTP equivalent: 405 – METHOD NOT ALLOWED
406 – InvalidDestination	Destination phone number invalid. HTTP equivalent: 406 – NOT ACCEPTABLE
411 – NoMessage	No message body provided. HTTP equivalent: 411 – LENGTH REQUIRED
413 – MessageExceedsLimit	Message is too long. HTTP equivalent: 413 – PAYLOAD TOO LARGE
506 – Failed	Message failed to submit to provider.
507 – Cancelled	Message cancelled.
508 – FailedByProvider	Message submitted to provider but failed by delivery receipt.

Esendex will send you a Delivery Receipt postback whenever the status of a message changes.

Type Properties

Property Name	Description	Data Type	Sample
DeliveryReceipt	Look for this value to identify a Delivery Receipt postback. If present, the value is always 1.	Int	1
MessageID	The initial MessageID from your outgoing MMS.	String	f880e00b-3a14-484c-80e7-ca6aa29a2f7a
ReferenceID	The ReferenceID from your outgoing request, if you specified one.	String
FromPhoneNumber	The number that sent your outgoing message.	String	55555
ToPhoneNumber	The number you sent the message to.	String	7572373369
DeliveryReceiptMessage	The delivery receipt.	String	DeliveredToDevice
Code	The status code of the delivery receipt.	DeliveryReceiptCode	000

Esendex will send you an MMS Response postback whenever we receive an incoming MMS message.

Type Properties

Property Name	Description	Data Type	Sample
MMSResponse	Look for this value to identify an MMS Response postback. If present, the value is always 1.	Int	1
MessageID	A unique identifier for this response.	String	9a35e913-ded0-7574-4642-5f60c550c706
MatchedMessageID	A unique identifier that is populated when the response matches a previous message. An empty identifier (00000000-0000-0000-0000-00000000000) indicates that no previous message was matched.	String	b1aa2a38-d0f8-407f-b76d-635ea818b62d
ReferenceID	This is populated if the response matches a previous message and you set the ReferenceID field in your outgoing MMS.	String	123
FromPhoneNumber	The number that sent the response text message.	String	7575550000
ToPhoneNumber	The number belonging to you that received the text message.	String	7575449511
ResponseReceiveDate	The UTC date when the message came in.	String	5%2f8%2f2023+2%3a42%3a36+AM
Message	The response text message body.	String	Hello.

Esendex will send you an MMS Sent postback after we send one of your MMS messages to the aggregator for delivery.

Type Properties

Property Name	Description	Data Type	Sample
MMSSent	Look for this value to identify an MMS Sent postback. If present, the value is always 1.	Int	1
MessageID	The initial MessageID from your outgoing MMS.	String	9a35e913-ded0-7574-4642-5f60c550c706
ReferenceID	The ReferenceID from your outgoing request, if you specified one.	String	12345
FromPhoneNumber	The number that sent your outgoing message.	String	7575550000
ToPhoneNumber	The number you sent the message to.	String	7575449511
SentTime	The UTC date when the message got sent out.	String	5%2f8%2f2023+2%3a42%3a36+AM

This response is returned by the SendMessage and ReadMessageStatus methods.

Type Properties

Property Name	Description	Data Type	Sample
Attachments	Comma-separated list of Media IDs for the message’s attachments.	String	10000001,10000005
From	Number used to send the message.	String	7575550000
MessageID	Unique ID of the message.	GUID	1627aea5-8e0a-4371-9022-9b504344e724
MessageStatus	Status of the message.	MessageStatus	Ready
SentTime	UTC date/time the message was sent.	DateTime	/Date(1682439497785)/
To	Recipient number.	String	7575559999

This response is returned by the GetPostbackSettingsForLicenseKey and GetPostbackSettingsForPhoneNumber methods.

Type Properties

Property Name	Description	Data Type	Sample
Country	Origin country for number.	String	US
PhoneNumber	Number being checked for postback URL settings.	String	7575550000
PostbackEnabled	Indicates whether the postback URL is enabled on the number.	Boolean	True
PostbackType	Indicates whether the postback URL is used for incoming messages, outgoing messages, or delivery receipts.ValueDescription0 – AllPostback URL is used for all messages.1 – DeliveryReceiptPostback URL is used for delivery receipts.2 – IncomingMessagePostback URL is used for incoming messages.3 – OutgoingMessagePostback URL is used for outgoing messages.	Enum	0 – All
PostbackUrl	The URL being used for postbacks.	String	http://www.esendex.us/postback.aspx
ReturnCode	Indicates whether an error occurred due to the data in the request.ValueDescription0 – NoErrorThe request was successful.1 – InvalidLicenseKey2 – InvalidUrl3 – InvalidPhoneNumber4 – InvalidPostbackType5 – NotFound6 – InvalidCountry	Enum	0 – NoError

This response is returned by the RemoveKeyword method.

Type Properties

Property Name	Description	Data Type	Sample
ReturnCode	Return code for the operation. This is always 0 - NoError.	Enum	NoError
SMSKeyword	One or more keyword responses.	Array of KeywordResponseInfo objects

Esendex will send you a Delivery Receipt postback whenever the status of a message changes.

Type Properties

Property Name	Description	Data Type	Sample
DeliveryReceipt	Look for this value to identify a Delivery Receipt postback. If present, the value is always 1.	Int	1
MessageID	The initial MessageID from your outgoing MMS.	String	f880e00b-3a14-484c-80e7-ca6aa29a2f7a
ReferenceID	The ReferenceID from your outgoing request, if you specified one.	String
FromPhoneNumber	The number that sent your outgoing message.	String	55555
ToPhoneNumber	The number you sent the message to.	String	7572373369
DeliveryReceiptMessage	The delivery receipt. The format will vary depending on the carrier.	String	id:1111111111 sub:001 dlvrd:001 submit date:2306132307 done date:2306132307 stat:enroute err:000 text:short message
Code	The status code of the delivery receipt.	DeliveryReceiptCode	003
BackupMessageID	This is the new MessageID of a backup DID message being sent when a short code message fails. This parameter is only present when a short code message is being sent via a DID as a backup.	String

This type is part of the data returned by the GetUnreadIncomingMessages method.

Type Properties

Property Name	Description	Data Type	Sample
FromPhoneNumber	Phone number that sent the incoming message.	String	7575550000
IncomingMessageID	Unique ID for the incoming message.	Guid	1835fecd-8402-4b02-91a4-5f4f9e036fe6
MatchedMessageID	Unique ID that matches the outgoing MessageID that this message is in response to.	Guid	1627aea5-8e0a-4371-9022-9b504344e724
Message	Content of the incoming message.	String	Hi, thanks for the message.
ResponseReceiveDate	UTC date/time when the message was received.	DateTime	/Date(1682439497785)/
ToPhoneNumber	Destination phone number of the incoming message.	String	7575551111

This data type specifies the options for an outgoing SMS message. It is passed to the AdvancedSMSSend method.

Type Properties

Property Name	Description	Data Type	Sample
AssignedDID	Number to send the message from. (Contact Esendex to add a number to your account.)	String	7575550000
Message	Text content for the message.	String	This is a sample message.
PhoneNumbers	One or more recipient numbers.	Array of String values	7575559999
ReferenceID	Custom ID of your choice. You can use this ID to filter incoming messages when you read them.	String	123
ScheduledDateTime	UTC date/time when message will send.	DateTime	/Date(1682439497785)/
StatusPostBackURL	URL to send postbacks to.	String	http://www.example.com/postback.aspx

This response is returned by the SimpleSMSSend, SimpleSMSSendWithPostback, AdvancedSMSSend, GetMessageStatus, and GetMessageStatusByReferenceID methods.

Type Properties

Property Name	Description	Data Type	Sample
Cancelled	Whether the SMS message has been cancelled.	Boolean	False
MessageID	Unique ID for every SMS message sent.	Guid	1627aea5-8e0a-4371-9022-9b504344e724
Queued	Whether the SMS message has been queued by the aggregator.	Boolean	True
ReferenceID	Unique ID that can be set using the AdvancedSMSSend method.	String	123
SMSError	Indicates whether there was an error sending the SMS message.ValueDescription0 – NoErrorThe request was successful.1 – STOPfromPhoneNumber2 – LicenseKeyInvalid3 – PhoneNumberInvalid4 – MessageInvalid5 – ScheduledDateTimeIsNotUTC6 – InvalidAssignedDID7 – NotFoundThe message ID is invalid.8 – InternalError9 – ContactEsendexAccountSuspended10 – AssignedDIDRequired	Enum	0 – NoError
SMSIncomingMessages	Returns null when part of a Send response.	Null	Null
Sent	Whether the SMS message has been sent to the carrier.	Boolean	False
SentDateTime	UTC date/time when the message was sent.	DateTime	/Date(928164000000-0400)/

Esendex will send you an SMS Response postback whenever we receive an incoming SMS message.

Type Properties

Property Name	Description	Data Type	Sample
SMSResponse	Look for this value to identify an SMS Response postback. If present, the value is always 1.	Int	1
MessageID	A unique identifier for this response.	String	9a35e913-ded0-7574-4642-5f60c550c706
MatchedMessageID	A unique identifier that is populated when the response matches a previous message. An empty identifier (00000000-0000-0000-0000-00000000000) indicates that no previous message was matched.	String	b1aa2a38-d0f8-407f-b76d-635ea818b62d
ReferenceID	This is populated if the response matches a previous message and you set the ReferenceID field in your outgoing SMS.	String	123
FromPhoneNumber	The number that sent the response text message.	String	7575550000
ToPhoneNumber	The number belonging to you that received the text message.	String	7575449511
ResponseReceiveDate	The UTC date when the message came in.	String	5%2f8%2f2023+2%3a42%3a36+AM
Message	The response text message body.	String	Hello.

Esendex will send you an SMS Sent postback after we send one of your SMS messages to the aggregator for delivery.

Type Properties

Property Name	Description	Data Type	Sample
SMSSent	Look for this value to identify an SMS Sent postback. If present, the value is always 1.	Int	1
MessageID	The initial MessageID from your outgoing SMS.	String	9a35e913-ded0-7574-4642-5f60c550c706
ReferenceID	The ReferenceID from your outgoing request, if you specified one.	String	12345
FromPhoneNumber	The number that sent your outgoing message.	String	7575550000
ToPhoneNumber	The number you sent the message to.	String	7575449511
SentTime	The UTC date when the message got sent out.	String	5%2f8%2f2023+2%3a42%3a36+AM

This response is returned by the SetPostbackEnabledForLicenseKey method.

Type Properties

Property Name	Description	Data Type	Sample
Country	Origin country for number.	String	US
PhoneNumber	Number being checked for postback URL settings.	String	7575550000
PostbackEnabled	Indicates whether the postback URL is enabled on number.	Boolean	True
PostbackType	Indicates whether the postback URL is used for incoming messages, outgoing messages, or delivery receipts.ValueDescription0 – AllPostback URL is used for all messages.1 – DeliveryReceiptPostback URL is used for delivery receipts.2 – IncomingMessagePostback URL is used for incoming messages.3 – OutgoingMessagePostback URL is used for outgoing messages.	Enum	0 – All
PostbackUrl	The URL to use for postbacks.	String	http://www.esendex.us/postback.aspx
ReturnCode	Indicates whether an error occurred due to the data in the request.ValueDescription0 – NoErrorThe request was successful.1 – InvalidLicenseKey2 – InvalidUrl3 – InvalidPhoneNumber4 – InvalidPostbackType5 – NotFound6 – InvalidCountry	Enum	0 – NoError

This response is returned by the GetSystemKeywordResponses method.

Type Properties

Property Name	Description	Data Type	Sample
Help	Content sent in response to the HELP keyword.	String	Testing: SMS Notifications. Text STOP to end. Msg&Data Rates may apply. [email protected]
Resume	Content sent in response to the RESUME keyword.	String	Welcome to Testing. Reply STOP to cancel. Reply HELP for help. Msg&Data rates may apply. Msg freq per acct setup. [email protected]
Stop	Content sent in response to the STOP keyword.	String	Testing: You have opted out and will no longer receive messages from this service. Reply RESUME to subscribe. [email protected]

This response is returned by the GetUnsubscribedNumbers method.

Type Properties

Property Name	Description	Data Type	Sample
EntryDate	UTC date/time recipient unsubscribed from the campaign.	DateTime	/Date(1682439497785)/
PhoneNumber	Phone number removed from the recipient list.	String	7575559999

This response is returned by the AddUnsubscribedNumbers and RemoveUnsubscribedNumbers methods.

Type Properties

Property Name	Description	Data Type	Sample
PhoneNumber	Phone number to remove from the recipient list.	String	7575559999
Error	Description of the unsubscription error.	String	Invalid Phone Number
IsSuccess	Whether the operation succeeded.	Boolean	False