BlueMail supports IMAP and POP3, and for Microsoft accounts Exchange ActiveSync, Exchange Web Services (EWS) and Microsoft Graph.
Important: While many POP3 providers offer IMAP support, we highly recommend using IMAP whenever possible. IMAP is a newer protocol designed for seamless operation across multiple devices, including mobile, and enables folder synchronization.
Learn more about the differences between POP3 and IMAP to make an informed decision.