X
Published: 2025-04-23 | Updated: 2026-08-26

How to Connect an Email Client to NiceNIC Business Email


Quick Answer

Confirm that the mailbox is active, the domain uses the required MX and authentication records, and the email client uses the correct server names, ports, encryption and full email address. Test both inbound and outbound mail after every change.

Before You Begin
- Confirm the Business Email order and mailbox are active.
- Check who manages DNS for the domain.
- Keep the full email address, password and required mail-server settings available.

1. Unable to connect via Email client via IMAP or SMTP:


When adding an email address in your Email client, i.e. iPhone, please firstly ensure you would fill in "c3.icoremail.net" for both the SMTP and IMAP email server. And secondly, please generate a password for the Email client separately by the following way:


Log in to your email account via "https://c3.icoremail.net/", select "Settings" in the left navigation bar, then choose "Generate Specific Password".


2. How to set the general configuration when using Outlook, Foxmail or other third-party clients?

Common configurations are as follows:

Protocol type
 Server address
 Default port
 Default port Encryption port (SSL)
SMTP
 according to the actual address
 25
 465
POP
 according to the actual address
 110
 995
IMAP
 according to the actual address
 143
 993
PUSH
 according to the actual address
 80
 443

Related NiceNIC Guides


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

Need help? We're always here for you. Human Support
Copyright © 2006–2026 NICENIC INTERNATIONAL GROUP CO., LIMITED. All Rights Reserved. · U.S. Affiliate: NICENIC LLC