An email message can include file attachments. The
attachments field of
an email message accepts a list of either two-value tuples, or
If tuples are used, one tuple must be created for each attachment. The first element of each tuple is the filename to use for the attachment in the message, and the second element is the data, as a byte string.
As a security measure to protect against viruses, you cannot send email attachments—or zip files—containing any of the following extensions: