How to pull all emails from gmail to roundcube webclient second time ?

[bradzio]

How to pull all emails from gmail to roundcube webclient second time ?
Scenario was very simple:
1. I configured roundcube webclient (on my priv Synology NAS) to download all emails from my gmail account via pop3. As my private mailbox backup
2. 20k emails have been downloaded sucessfuly next day
3. then I dicided to do my gmail account cleanup - 10k emails were deleted
4. aftter that I deleted my gmail account definition in Roundcube on my NAS  and removed by CLI the .Maildir forder from my $HOME folder directory.
5. then I have recreated pop3 gmail account definition in Roundcube on my NAS.
6. After all Roundcube client can connect to gmail server, but it is downloading only new emails, can't pull old emails.
Question - how to force Rouncsube webclient to download all emails from gmail once again.

And please don't sugest me to use Roundcube  import function

Thx in advance for any sugestion
Reg. Ben

[schnappi]

It may be somewhat slow and not very advanced (that being said a more advanced way didn't seem to work) but would literally just download the emails via an IMAP/ POP client to local storage. Then login to email server via IMAP and upload the emails to own mail server. Then access via Roundcube as usually access email.