[Evolution-users] Evolution spends a lot of time synchronizing old messages with Yahoo

[Milan Crha]

On Wed, 2025-04-30 at 15:03 +0200, rsbrux via evolution-users wrote:
> However, there is no way that so many messages have been changed
> (added, deleted or moved) since I turned off syncing for the INBOX
> folder.

	Hi,
it means that they are not stored in the local cache yet. Being there,
it'll not download them again.

There is one thing with the IMAP, the server can change so called "UID
validity", which is a mark which changes whenever the server renumbers
the messages (and changes their UIDs). That effectively invalidates the
whole local cache and everything is downloaded again.

I think it's unlikely the Yahoo! server does any such thing, the less
to do it often. It might be something broke when you forcibly turned
off the computer, without closing Evolution gracefully. You know, use
the force wisely ;)

Anyway, ~6K messages is nothing significant, depending how large they
are, of course (messages with attached videos are not like the message
I'm currently going to send). It can take time, depending on the server
speed, connection speed and so on. There is no real difference for the
IMAP account to have enabled cache for offline for selected folders or
for all the folders, the code is the same. It can differ with piling up
the download requests, but otherwise it's the same.

	Bye,
	Milan