On 11/12/2015 04:45 AM, Jan Müller wrote:
> 13gb email in user inboxes (6 users)
...
> Also, we are having problems with Thunderbird, our current imap
> client. It's slow. It's global index, which should speed up searching,
> has many UX problems and does not find every message. Any suggestions
> for good windows imap client would be appreciated too.
As you evaluate other clients, you should keep in mind the possibility
that the problem isn't in Thunderbird, at all.
When an IMAP client synchronizes with a server, it retrieves a complete
list of messages in the folder that it's synchronizing from the server.
It compares that list to the data on disk, removes messages from disk
that aren't on the server any longer, and fetches individual messages
that it doesn't have.
There are a couple of things that could be very slow about that. The
first is that Thunderbird defaults to an mbox storage for mail folders.
In order to do anything but append new messages, it has to re-write the
entire file. That'll happen occasionally when Thunderbird "compacts
folders," and when that happens it's going to be a prolonged,
disk-intensive process for multi-gigabyte folders. The other is that
every time Thunderbird opens a folder with tens of thousands of
messages, the sync process can create a lot of network traffic, and a
lot of disk activity on the server.
You might be able to find a client with better local storage than
Thunderbird, but you can't avoid the latter problem as long as you're
using IMAP. Big folders will always suck. There's really only one good
way to use IMAP: The Inbox should have only messages that require
action. Once a message has been handled, or read with no required
action, it should be archived.
Thunderbird makes that process easy. Just press 'a' on the keyboard
when you're done with a message. And used in that way, I've seen very
large accounts perform very well and have no problems with the search tool.
No matter what your client is, huge Inboxes are difficult to support.
Good luck.
--
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