[skrebbel]

> History creates lock-in, and history is really hard to move around.

It doesn't need to be. For example, I moved my email between IMAP servers multiple times simply by dragging & dropping a swath of messages in Outlook. That Outlook (of all programs!) is the only tool that I know of that makes this easy is not a problem with the decentralized nature of email but simply with mediocre client implementations.

[vog]

> That Outlook (of all programs!) is the only tool that I know of that makes this easy

Not sure what you mean.

It works as easy with Mutt. Open IMAP folder, select all, save to [other IMAP folder or local folder, as you wish].

Works reliable even with very large folders, you just have to wait a bit longer until it's finished.

[Normal_gaussian]

Practically every email program can move email easily. It is somewhat trivial.

Recently we moved all our company mail with IMAPsync. Automated commandline tool. Awesome.

[nandhp]

Thunderbird can also do this.