Forum Thunderbird for Android zajednice

My email hosting provider is is using mailchannels spam filter for outbound email, and after I switched from K9 to Thunderbird (Android) all my outgoing emails are being marked as spam and blocked. I have a ongoing case logged with them but checking if any one has any advice or has similar issues?

Note k9 works fine, I'm guessing they are confused with headers from PC vs mobile version

I checked out multiple Support/forum posts first, but I found no matches, nor could I find this in the interface.

I just switched to Thunderbird yesterday, due to Microsoft's continually pushing their awful, new Outlook. I'm generally pleased, although I was stunned this morning to find that (when multiple messages are selected on my Android phone) there's no option on any of the More/... menus to Move/Refile all of them at once, if they're going to the same folder. I set one of my swipe actions to Move, but that only works for the individual email I'm swiping on.

Apparently, I have to move every single one separately, which is a pain if you're moving more than one or two. If there's no such option that I missed spotting, *PLEASE* add this to your road map ASAP, since it's a very basic feature to still be missing, for as long as Thunderbird has been around! All essential functions a user can do with one message must be available with multiple ones. Thanks!