Nylas Basic supports generic IMAP accounts. We don't show them in the list of supported providers for QA reasons but you can still add such an account like this: https://imgur.com/a/WBdXe
(By the way, feel free to open a Github issue if you're encountering problems syncing your IMAP account: https://github.com/nylas/N1/issues/)
(By the way, feel free to open a Github issue if you're encountering problems syncing your IMAP account: https://github.com/nylas/N1/issues/)