📄️ Attachments via API
How to add attachments to messages with the v3.1 API, either by URL or base64 content, including size limits and the required name and content type fields.
📄️ AutoTrack
How AutoTrack in the v3.1 API makes every link in an HTML template trackable, and how link name attributes become labels in your activity data.
📄️ Character Sets
Character sets supported by the MessageGears v3.1 API for encoding email messages. UTF-8 is the default, with Chinese, Japanese, Korean, and other encodings.
📄️ Custom Header Values via API
How to add up to five custom X- headers to email messages with the v3.1 API, using paired header name and value parameters in a transactional job.
📄️ Custom Tracking Domain
Use a custom tracking domain with the v3.1 API so click, open, and unsubscribe links use your own domain. Includes the DNS CNAME change required.
📄️ OnBehalfOf
How the advanced OnBehalfOf fields in the v3.1 API set the Sender header, and how email clients such as Outlook and Thunderbird display it.
📄️ RecipientListXmlUrl
How to supply bulk job recipient data to the v3.1 API as a URL to an XML file over HTTP, HTTPS, or Amazon S3, including supported compressed formats.
📄️ RecipientXML
Rules for RecipientXML in the v3.1 API, the XML data that defines a recipient and personalizes templates, with examples including the optional RecipientId.
📄️ Referencing Remote Files
How to reference remote files in v3.1 API calls using HTTP, HTTPS with basic authentication, or Amazon S3, and how to grant MessageGears read access.
📄️ Request ID Type Mapping
Decode MessageGears request IDs. The code at the start of each request ID shows the job type, such as bulk job, transactional campaign, or external job.
📄️ SupplementalDataXml
How to use Supplemental Data in bulk jobs to add your own XML data to the template rendering context, so templates can personalize content for each recipient.
📄️ UnsubscribeHeader
How the UnsubscribeHeader option in v3.1 Bulk and Transactional API calls adds a List-Unsubscribe header so recipients can unsubscribe from their inbox.
📄️ UrlAppend
Use UrlAppend to add a tracking string, such as UTM tags, to every link in an HTML template. Requires AutoTrack and supports personalized values.