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Comment by scandox | Hacker News Reader

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scandox·

Recommend IMAPSync: https://imapsync.lamiral.info/

Have used it at pretty massive scale and it handles a hell of a lot of different options.

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This one... and I used it to migrate 20 years of email from a G Suite account to Gmail account.

https://medium.com/@buro9/one-account-all-of-google-4d292906...

You freaked me out with the 20 years - I didn't think it'd been _quite_ that long. 2006 as "Google Apps for Your Domain", in case anyone else is wondering.

In my Gmail I have more than 20 years, all email I've sent and received since 1999. I've maintained a single source of emails and move it forward as I've changed provider.

+1 for IMAPSync, used it a few times to migrate business and personal email, including into G Suite. It enabled me to offer a very smooth transition for people, entirely hiding from them the complexities of what "move my email" really entails!

I tried this recently for moving from outlook.com to mailbox.org and it was painfully slow. Because it fetched every message individually, it would get throttled at about 10 messages/second.

I wrote my own thing using IMAPclient in python and it was a hundred times quicker.

I have moved more than 2000 mailboxes with over a terabyte of data with it. Worked well for me.

From Outlook.com? It was probably Outlook.com doing the throttling.

Another happy user of imapsync. The best thing IMO is that you can stop/get disconnected for some reason and it will effectively SYNC, without having to praise just to complete without errors

Garbage. Tried it with Fastmail from several different machines and it just locked up at the "Host1: connecting on host1 [imap.fastmail.com] port [993]" stage

...telnet to the same host:port on same machine works fine.

This. I've used it extensively and it's simply unparallelled.

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