Best way to move mail from one server to another

[Rick Romero]

  Quoting Sami Ketola <sami.ketola at dovecot.fi>:

>> On 4 Sep 2018, at 18.45, Rick Romero <rick at havokmon.com> wrote:
>>
>>       https://imapsync.lamiral.info/FAQ.d/FAQ.Duplicates.txt
>>
>> Seems to use UIDs so that 'data' isn't lost.
>>  
>
> No it does not. This is different thing. This is about managing  
> duplicates on multiple syncs.    Imapsync seems to keep track of UID  
> -> MAIL mapping for server A and UID -> MAIL mapping for server B so  
> that on multiple runs it does not sync the same messages again.  
> However it does not use the same UID -> MAIL for server B as is  
> originally on server A. And that is the problem.

That's not what you said, you said there was a client sync issue.   
That's definitely an issue (especially if you run Mac Mail).

Ignoring duplicates on multiples runs is a non-issue, even with the  
2011 version.  Recording UIDs is not necessary for that.

Rick
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