We are excited to announce our new API Documentation.
The name of the header to add to the incoming message. The name must contain at least one character, and can contain up to 50 characters. It consists of alphanumeric (a–z, A–Z, 0–9) characters and dashes.
The content to include in the header. This value can contain up to 2048 characters. It
can't contain newline (\n) or carriage return (\r)
characters.
When included in a receipt rule, this action adds a header to the received email.
For information about adding a header using a receipt rule, see the Amazon SES Developer Guide.