We have a Dovecot server configured for internal usage purpose and Thunderbird as a email client with IMAP protocol. I have never used either of the software, so my questions are a bit naive.

Due to some reasons we downloaded all emails to local Thunderbird uisng POP3 few days back, now we are using IMAP and POP3(as backup purpose). Today first all messages are downloaded using POP3 but in IMAP, messages after 20th JAN are only getting. I thought it is due to option having checked Leave messages on Server in POP3 settings. I'm confused that whether message before 20th JAN are remains on server or deleted, how to know this ?

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Is the POP3 server settings.

  • Wait a moment...is your setup like? Are you now using IMAP or POP3? They're pretty much exclusive to a certain extend.
    – Bobby
    Feb 3, 2014 at 8:27
  • I use both, POP3 as a backup because we have not taken any precautions for unexpected disasters.
    – Mahesh.D
    Feb 3, 2014 at 8:50

1 Answer 1


Your messages before Jan 20 got deleted because you checked the option "Leave messages on server for at most 14 days". If you want to keep them all on the server, you need to uncheck that last part.

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