Liking the beta a lot. Very likely to buy it eventually. A must for me though - option to turn off viewing attachments inline, and also to insert attachments at end of message. AFAIK only in Mail.app via defaults command, but I can't use it without this
Conversation
Replying to
In Mimestream, attachments aren’t mixed in with the body unless they are images and specifically dragged into the body. You can drag them to the header to make them be non-inline attachments. Will look at the option to turn off viewing inline attachments!