If you use Titan Email, the email account configuration is the following:
Protocol |
Port (encryption) |
Host |
IMAP (incoming emails) |
993 SSL/TLS |
imap.titan.email |
POP (incoming emails) |
995 SSL/TLS |
pop.titan.email |
SMTP (outgoing emails) |
465 SSL or 587 STARTTLS |
smtp.titan.email |
You can always find these values in your Titan Webmail → Settings → Configure 3rd party apps section.

You can find a detailed explanation of each protocol in this tutorial: An In-Depth Guide to POP3, IMAP, and SMTP 💡