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Re: Gnus: caching message headers?

From: Gregory Heytings
Subject: Re: Gnus: caching message headers?
Date: Tue, 08 Sep 2020 21:52:08 +0000
User-agent: Alpine 2.22 (NEB 394 2020-01-19)

Is there a way to tell gnus-agent to create only a cache of headers, that is, to not store a local copy of the emails that have been read?

Interesting. IMO nowadays MUAs should work by systematically maintaining a full local copy of your mailboxes/folders.

I (respectfully!) disagree. This means that each MUA has to reinvent what already exists on the server, that is, to reinvent its own IMAP-like implementation, to store emails and to locate information in emails. It is also a waste of resources, given that only a very small fraction of the emails are read more than once. A "pure IMAP" MUA only has to query the server through the IMAP protocol, and only manages (1) a list of folders and (2) a list of email summaries in each folder. In fact it could even manage nothing, and query the list of folders each time it is started, and create a summary of the N most recent emails each time a folder is opened.

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