Set mail to only display mail within 30 or 60 days

20 Jul 2020

      Set mail to only display mail within 30 or 60 days, Here are two
examples.

normal
E.g:

A654 FETCH 2:4 (FLAGS BODY[HEADER.FIELDS (DATE FROM)])

2 FETCH (FLAGS (\Seen) BODY[HEADER.FIELDS (DATE FROM)] {73}
Date: Tue, 07 May 2020 12:26:55 +0800
From:  test@www.chengmail.ml

)

3 FETCH (FLAGS (\Seen) BODY[HEADER.FIELDS (DATE FROM)] {62}
Date: Tue, 07 May 2020 12:35:34 +0800
From: lty@cndns.com

)

4 FETCH (FLAGS (\Seen) BODY[HEADER.FIELDS (DATE FROM)] {62}
Date: Tue, 07 Jul 2020 17:41:53 +0800
From: lty@cndns.com

)
A654 OK Fetch completed (0.002 + 0.000 + 0.001 secs).

Set to display mail within 30 days
E.g:

A654 FETCH 2:4 (FLAGS BODY[HEADER.FIELDS (DATE FROM)])

4 FETCH (FLAGS (\Seen) BODY[HEADER.FIELDS (DATE FROM)] {62}
Date: Tue, 07 Jul 2020 17:41:53 +0800
From: lty@cndns.com

)
A654 OK Fetch completed (0.002 + 0.000 + 0.001 secs).
Is there any way to display the result of case 2?
I found lua.
https://doc.dovecot.org/admin_manual/lua/#mail-lua
But I don't know how to edit the lua script, Are there more examples?
I also watched the help, but it doesn't help much.
https://doc.dovecot.org/configuration_manual/authentication/lua_based_authen...
https://doc.dovecot.org/configuration_manual/push_notification/#lua-push-not...
Can Lua fulfill my needs?