A user's last access time

[Sami Ketola]

> On 19. Oct 2020, at 18.54, Victor Sudakov <vas at sibptus.ru> wrote:
> 
> Dear Colleagues,
> 
> Is there a file or directory within a user's Maildir, whose date of
> modification or access indicates the last time the user accessed his/her
> E-mail via IMAP or POP3?
> 
> I'd like to figure out the time a user last logged in into his/her mail
> account, not the last time a mail was delivered to the INBOX.
> 
> This information is probably available in the log, but a file which is
> touched each time a user accesses his/her mail, is more convenient.

Not directly but you might want to take a look at this: https://doc.dovecot.org/configuration_manual/lastlogin_plugin/

Sami