Their clients are.
However, you would gonna need their sync-engine[0] on your own servers in order to avoid contacting Nylas servers. From what I understand, it's kind of a cloud API that makes some sense out of emailing protocols.
However, you would gonna need their sync-engine[0] on your own servers in order to avoid contacting Nylas servers. From what I understand, it's kind of a cloud API that makes some sense out of emailing protocols.