Are you looking to clean up your client inbox, or the server inbox?

If your client inbox, you don’t need a plugin, on the account settings synchronization & storage, on the section disk space, select the synchronize the most recent and specify the amount days, months, years, whatever.

If you want to remove too old messages from the server, perhaps the server itself offers a way to do so…

So you’re not simply trying to delete old emails based on the date they were sent to you? It might help to know where these dates are located, if in the subject line or in the body. And is consistently a straightforward date like “2024-02-11”, or are you also trying to look for vague references like “Feb 11”? That might make a difference for how the question is answered, however a quick google search suggests that the FiltaQuilla add-on will support regular expressions in the message filters for addresses and subjects, while “Expression Search / GmailUI” adds expressions for body searches.

If you’ve done any programming, you could hook up a script to fdm (https://github.com/nicm/fdm).

Rough logic, for each message:

* match body with several timestamp regexps
* parse matched messages
* find dates in message body
* parse final match
* discard message if that is date earlier than now - x days

@Pantherina @linux

I would have a look at mutt’s patterns in your position.