The composer has a lot of room for improvement, and this ticket should line out what we approximately want from it.

Here's a list of ideas of what we *could* do (not what's actually planned):

Possible enhancements:

• HTML editor (basic formatting)
• Markdown editor (basic formatting)

Text edit features:

• quote selection, unquote selection
• Inline text (actually an attachment), to write code snippets inline (with monospace font).
• Snip ... (shorten the email and remove unnecessarily long parts), user driven, allows to snip selection or paragraphs
• Inline images (besides attachments).
• Snippets
• Signature support (as a snippet?)