Multimedia Attachments Supported in Transactional Emails.
Support for audio and video attachments in Transactional Emails
The following formats are now be allowed:
- Audio: .mp3, .m4a, .wma, .ogg, .flac, .wav, .aif, .aifc, .aiff
- Video: .mp4, .m4v, .mov, .avi, .mkv, .mpeg, .mpg, .wmv
