new setting to delete email from server; don't store duplicate emails;

[treworld]

This will let you choose if you want to delete the messages after they've been imported. A condition has been implemented to prevent duplicate emails from being imported also.

[ad-m]

@treworld , why do you start adding completely different features in that pull request?

[ad-m]

@treworld , could you add settings for "don't store duplicate emails;" ? I think that not everyone will be interested in such an action, especially because of performance. I think this can be a new settings per mailbox.

[coddingtonbear]

@treworld -- just by the way, you can avoid unrelated changes from appearing on a posted pull request if you post your pull request for a branch other than the one you're working on (in this case, probably, master), and continue whatever other feature work you're engaged in in a different branch. It may be counter-intuitive at first, but github PRs update themselves automatically as you push up new changes to the branch you posted the PR for.