Re: [Evolution] Dealing with huge imap accounts / best practise?

[fkater posteo net]

evolution-list:

> On Mon, 2019-03-04 at 11:14 +0100, fkater--- via evolution-list wrote:
> > Caching seems required for Evolution to make search work, doesn't
> > it?
>
>       Hi,
> no, it doesn't. The local cache/summary (basically the folders.db file
> of the mail cache) is needed to view the folder content in the message
> list in the GUI. Some searches can be done in this local summary (like
> when searching for mail with recipients or with certain subject), but
> some require the whole message (like when searching for "Message
> contains"/"Body contains").

Hm, I wish I could avoid caches -- please help explaining the
following behaviour, though:

- Create a fresh IMAP account, local sync disabled (20.000+ emails
  on the server, a lot of subfolders)
- Use another mail client to move an email into a subdirectory of
  that same IMAP account; in my case that mail was flagged read
- In Evolution, search that mail from the top folder incl. all
  subfolders, by entering the unique subject
- BTW: Indeed, the status line displays something like server based
  search... nice
- Wait until all processes finish (10 minutes here)

Result: Mail not found.

- Try Send / Receive messages
- This took 30 minutes
- Search repeated as above

Result: Mail not found.

When I manually open the subfolder with that mail once, and then
restart the search from the top folder it gets found.

What is happening here?