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

[rsbrux]

Many thanks for your extensive response. This behavior was happening
*before* I clobbered the Evolution data store.  It was my frustration
with it that caused me to turn off the computer before it had shut
down.
Before I turned off folder sync yesterday, I left the computer on
overnight to make sure that it had finished syncing.
There should therefore have only been new messages (added moved or
deleted in the last day) to sync when I turned on the account sync
today, not 1199 of them.
If the behavior persists, I will take Pete Biggs's advice and run sync
with debug.  Based on your excellent documentation here:
https://gitlab.gnome.org/GNOME/evolution/-/wikis/Debugging
I presume that I should run something like:
> flatpak kill org.gnome.Evolution
> CAMEL_DEBUG=downsync flatpak run org.gnome.Evolution >& evolution.log
in a terminal window.
Many thanks for your support!


On Wed, 2025-04-30 at 15:12 +0200, Milan Crha via evolution-users
wrote:
> 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