Rated 3 out of 5 stars

Could it follow the rule of thunderbird apply on sending (html only, text only, or html + text) email based on the setting in the Tools > Options > Composition > General > Send Options (as it already have a list for sending what text format to other (text, html, or text + html) instead of the existing approach (another option in the addon)

This is good to jump to the "Local Folder -> outbox" after it finishes, so that new user don't need to waste time to check where the mail went to

This review is for a previous version of the add-on (1.0.3).