CreateMessage/ creates a message using either the Copy/Paste Template or the Newsmanager Template. A few caveats:

Confirm that the information passed to HTMLVersion is contained on one line
Confirm that this content is wrapped with any applicable escape characters (raw HTML code contains a variety of characters that are required to be escaped when passed via JSON, XML, or any variety of programming languages)

Template IDs

6 Blank Template
143 Copy Paste
100 Newsmanager
141 TextOnly

If the above IDs are not used – a partial success may be posted for the response: "Cannot use PnP or SnP template through API. Message was created but message template and content were not updated."

The message will require that one of the templates above is selected. If another template is selected (e.g., an editor template), the content that was passed via the API call will be overwritten with the HTML from the Editor Template.

Example

Create a message:

EXAMPLE:
{
"SessionID":"00000000-00000-0000-0000000000000",
"UserID":"SAMPLE",
"AutoUnsubscribeLink":true,
"CopyPasteTemplate":false,
"HTMLVersion":"<html> <Title>Happy Birthday!</Title> <Header> <b> Time to Celebrate </b> <span> <Header> <Body><i>Happy Birthday </i> </br> to you! </Body> </html>",
"LoginID":123456,
"MessageCategoryID":123456,
"MessageName":"Message Name",
"SubjectLine":"Message Subject",
"TemplateID":6,
"TextVersion":"Testing akjfkajfkajfkj"
}

HTTP POST

https://dna.magnetmail.net/ApiAdapter/Rest/CreateMessage/

POST Parameters

NOTE: This call does not have optional parameters.

Required Parameters

Parameter	Value	Description
SessionID	String	This is an authentication token which can be obtained by making the authenticate call.
UserID	String	The UserID returned in the authenticate call.
LoginID	Int	The login ID of the individual sending the message. This is returned in the authenticate call.
AutoUnsubscribeLink	Boolean	This parameter only applies to the Template value. If set to FALSE, this will override the TemplateID set below and use the Copy Paste template. If set to TRUE and the template selected is 143, this will override the Template ID and use the Newsmanager template.
CopyPasteTemplate	Boolean	If set to True – based on the value for AutoUnsubscribeLink will either select the Copy Paste or Newsmanager template and override the Template ID selection.
HTMLVersion	String	The HTML content of the message.
MessageName	String	This is the name for the message, it is limited to 100 characters
SubjectLine	String	This is the Subject Line of the message, up to 100 characters. This can be changed via the Send page or API call.
TemplateID	Int	The template ID used. Refer to the beginning of this article for the values available.
TextVersion	String	The Text content of the message.

Conditional Parameters

You may also include following parameter (that may be required under certain conditions).

WARNING: If your account has MESSAGE CATEGORY as the unsubscribe, this parameter is required.

Parameter	Value	Description
MessageCategoryID	Int	This is the Message Category ID, to solicit a list of categories use the call GetMessageCategory/.