Very slow mail download/notification with dovecot 2.2.33 and Thunderbird

[Stuart Henderson]

On 2020-02-11, ml_dovecot at thorsten-reichelt.de <ml_dovecot at thorsten-reichelt.de> wrote:
> I know that there are many results if I search for "dovecot thunderbird
> very slow" on Google but none of them helped me with my problem. :(

Do you have imap compression enabled? I had some problems with that and
Thunderbird.

> I just don't know where to look for the cause right now, but I can
> provide configurations (like output of |doveadm config) |and some logfile=

Providing any non-default config is usually helpful.