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Published: 2025-09-05 | Updated: 2026-08-28

How to Set Up Your Email with POP3 & IMAP


Use IMAP when mail must stay synchronized across devices. Use POP3 only when you intentionally want a client to download messages and you understand its server-retention settings.


Choose a Protocol

  • IMAP: keeps mail on the server and synchronizes folders, read status and deletions.
  • POP3: downloads inbox messages to the client; behavior across devices depends on whether the client leaves copies on the server.


Information You Need

  • Full email address as the username
  • Mailbox password
  • Incoming and outgoing server names supplied by NiceNIC
  • Required ports and encryption modes
  • SMTP authentication setting


Configure the Client

  1. Create a new mail account in the client.
  2. Enter the full email address and mailbox password.
  3. Choose IMAP or POP3.
  4. Enter the NiceNIC incoming-server name, port and encryption method.
  5. Enter the outgoing SMTP server, port and encryption method.
  6. Enable SMTP authentication with the same mailbox credentials when required.
  7. Send a test message to an external address and reply to it.


If Setup Fails

  • Test the mailbox in webmail first.
  • Check the password and full username.
  • Confirm ports and TLS settings.
  • Check the local firewall or ISP.
  • Verify the domain's MX records.


Frequently Asked Questions

How do I know the change worked?

Check the current status in your NiceNIC account, then test the service that depends on the email client. Do not rely only on the absence of an error message.

When should I contact NiceNIC Support?

Submit a ticket when the required control is unavailable, the status remains pending after the checks in this guide, or the issue depends on an account-specific order or registry decision.


Related NiceNIC Guides


If the issue continues after you complete these checks, submit a NiceNIC support ticket. Include the affected domain or product, the exact error message, the time of the issue and the troubleshooting already completed.

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