Re: Switching backends

[Karl Kleinpaste]

Sebastian Tennant <sebyte@smolny.plus.com> writes:
> Switching backends isn't a problem, but how to perform the migration
> of already 'processed' mail?

Create new nnml equivalents of old nnfolder groups.
Enter an nnfolder group.
If you care about the order in which the articles will be moved, then
re-sort it e.g. by date with `C-c C-s C-d'.
`M P a' to process-mark all articles.
`B m' to move the articles, selecting the equivalent nnml group.
Once you're sure that everything has moved as expected, arrange to
delete old nnfolder groups in *Group* with `G DEL'.