Email Client Configuration (

Please consult FAQs below for an introduction on the subject.

On 23 January 2024 POST is phasing out the usage of unencrypted and unauthenticated connection methods to our platforms.
If you have been referred to this page, please review the connectivity guide below that most closely represents your use case.
Both your POP3/IMAP and SMTP configurations should use an encrypted connection (SSL/TLS) and username/password.

Note for Apple iPhone users: Due to a bug inside latest iOS 17.x – we recommend to use port 587 to configure SMTP on Mail application email client.

Configuration & Modification of most common email clients:


Encrypted Email Client Configuration – Introduction.

What is an email client ?

Why should IMAP be preferred over POP ?