Why-won-t-imap-work
IMAP requires three specific "keys" to open the door: the server address, the port number, and the encryption type.
The most frequent reason IMAP fails is a breakdown in "trust" between your client and the server. why-won-t-imap-work
Standard IMAP typically uses port 993 for secure SSL/TLS connections or port 143 for non-secure connections. Using the wrong port—or the wrong encryption method for a specific port—will result in a "Connection Refused" error. IMAP requires three specific "keys" to open the
For many services, IMAP access is turned off by default for security. You must manually enable it within the webmail settings of your account (e.g., Gmail Settings > Forwarding and POP/IMAP). 3. Network and Software Interference the port number