Thunderbird for Android Community Forum

I am a novice in Thunderbird on Android (version 8.2). I have uploaded my settings from my desktop, where there is

       <value key="sentFolderSelection">AUTOMATIC</value>
       <value key="subscribedFoldersOnly">false</value>
       <value key="syncRemoteDeletions">true</value>
       <value key="uploadSentMessages">true</value>

So, I expect that the emails I send will be stored in the folder where there is the message I reply to.

But unfortunately, they are not there. I tried to find them in Sent, Archive... but did not succeed anywhere.

I just switched to K9/Thunderbird pn my Android device Is there a way to create/import subfolder which i use for my mailbox before? My account is using POP/SMTP and work fine except thr subfolder

It appears you need to copy and paste the desktop email signature from an email to use on the Thunderbird mobile app rather than the html version in the settings. I have copied and pasted my email signature from an email and tried using the Samsung flow app to copy it to clipboard. Both ways don't bring across images or coloured text and I can't see where to add/ edit either. Is there a way to add images or colour the text on the android mobile version of the Thunderbird email signature?