Re: [Evolution] Fwd: Mail in Evolution disappearing - mystery deepens

[dave boland <dboland9 fastmail fm>]

Paul,

Thanks for the insight.  There is an IMAP option in Evolution to
synchronize the email, but I have not found much info about this option.
 Does anyone know what it does and the pros/cons?

My objective is to have a local copy (on my computer or email server) of
all sent and received email, while leaving about 4 months worth on the
isp server for remote use.  periodically, I take the email from the
inbox and sent and place them in subject folders.

My question is how do I do that with Evolution, or any email
application?

On Wed, Dec 2, 2015, at 01:37 PM, Paul Smith wrote:
> On Wed, 2015-12-02 at 13:21 -0500, dave boland wrote:
> > Am I correct in thinking POP did download the messages for local
> > storage?
>
> Correct.  This is the major difference between POP and IMAP.
>
> POP is a simple delivery facility for email: when you access it it
> downloads the entire mailbox from the server to your local system then
> (by default) deletes the content on the server.  So your local system's
> version is the one true version of your mail that has already been
> delivered.  Some POP servers support options to not delete the content
> on the server, but that means they'll all get downloaded again next
> time.  Also you can't "upload" things to a POP server so information
> like what messages you've replied to, what's been deleted, etc. cannot
> be updated on the server.  It all exists only on your local system.
>
> IMAP is fundamentally different: the master copy of mail is left on the
> IMAP server and your local mail client interacts with the server to
> perform actions like retrieve mail, delete mail, move messages between
> mailboxes, etc.  This lets you have multiple mail clients access mail
> and see a relatively up-to-date view of your mail.  It also means that
> any messages stored locally on your system are merely cached there for
> performance reasons, and you can delete your local disk cache and they
> will not be lost.  But of course, once something is deleted on the
> server you can't access it any more locally, usually, unless you've made
> a backup.
>
> There are lots of articles on the web about the differences too.
>
> Cheers!
-- 
  dave boland
  dboland9 fastmail fm

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