Outlook vs Thunderbird

[Tanstaafl]

On Tue Jul 07 2020 02:07:08 GMT-0400 (Eastern Standard Time), Mark
Constable <markc at renta.net> wrote:
> FWIW I meant if the client is Windows7/old-Outlook then changing either
> 993/SSL or 143/STARTTLS to 143/NONE could help pick up the mail. We had
> to do this for a 100 or so clients a few months ago after upgrading to
> Ubuntu 20.04.

Really, really bad idea. You just disabled an/all security on your imap
connection.