imap import after importing all email for an exported folder

[teds-it]

I couldn't find this in the documentation;

I imported an email inbox (146GB) via a folder (email) import. What happens if I create an IMAP import for that user in the web browser? Will Mail Piler then (try to) import all messages again?

[larsen0815]

I guess it will, but should then recognize those mails as duplicates and ignore them.

[jsuto]

@larsen0815 is correct. Importing the legacy emails via imap is fine, though much more effective if the emails are copied to the archive host, so then it's a straightforward local import. However, keep importing a large mailbox over and over again is not a good idea, even though duplicates are set. I strongly recommend getting emails via smtp to the archive after the initial import. Or if you insist on imap, then use a date filter for the import, eg. import emails only after yesterday.