Thunderbird E-Mail Client Ii

[Old_Geezer]

Following in from https://www.theanswerbank.co.uk/Technology/Computers/Question1613244.html

To be honest as I read through what I put last time it is the same issue, but she is now asking about e-mail clients she can buy, and I figure if Thunderbird isn't working why should a paid for client ?

A couple of examples, a few days ago she replied to a received e-mail, on sending it came up with some error message that it couldn't put it into the SEND box/folder. We've come across this before, and it means it isn't to be found on her PC client, nor on the website account, nor on the mobile. It may have been sent, it may not have; no way of telling. But for sure the e-mail is now nowhere to be found and has no evidence of being written any longer, until someone responds, if they do.

She got confirmation from the person sent to that it wasn't received so send the same info again just now, from my modem/router, using her mobile phone. No message came up about there being problems putting it in the send box, and it went into the send box on the mobile client just fine, but checking her PC and the service provider's webpage for her e-mail account, nothing is seen.

Any thoughts what the issue could be and how to fix it ? I feel IMAP must be part of the problem, the the strange combination of what works when, and what doesn't, is puzzling.

TIA

[Old_Geezer]

Just bumping the thread in case someone has an answer.
Cheers.

[Buenchico]

Given that millions of people all over the world use Thunderbird without any problems, I can't help wondering whether (for some unexplained reason) it's failed to install properly on your machine.

Try uninstalling it, RESTARTING YOUR COMPUTER and then re-installing. (I've used capitals there because it's IMPORTANT to restart your computer when uninstalling/reinstalling, as it flushes the registry entries).

[Old_Geezer]

May be worth a try. Would that cycle retain existing data ? I'd dread to think what result if she lost her existing e-mails. (Must be a way to back it all up I suppose.)

[Buenchico]

I'm not sure what would, or wouldn't be retained, when you reinstalled Thunderbird.

If in doubt, simply export the current user profile to a convenient location on your computer. It will then be available to import back should you need to do so:
https://support.mozilla.org/en-US/kb/moving-thunderbird-data-to-a-new-computer

[Old_Geezer]

Cheers. I'll give it a try.