7 Feb
2026
7 Feb
'26
2:25 a.m.
On Fri February 6 2026 17:08:16 dep via tde-users wrote:
Any expert on mail protocols here?
(Postmaster since 1995)
Since you're using IMAP which handles multiple clients well I suggest you set up Thunderbird on the same box and see if it really does work with Proton and if so see if you can drill down and find the difference in how they behave.
--Mike