Thunderbird for Mac troubleshooting

User Name : name@example.com
Your user name is your full email address
Incoming Server : mail.example.com
Ports : IMAP 143 / POP 110
Outgoing Server : smtp.example.com
Port : SMTP 587

Mozilla_Thunderbird_logo

This guide will help you fix errors in the setup of an email account in Thunderbird for Mac.

Is this the first time you’re setting up this Thunderbird for Mac email account? Then use our new email setup guide, rather than this troubleshooting guide.

Replace example.com with your domain name

Check existing account settings

1. Launch Thunderbird

2. Choose the account, then View settings for this account  

or

Choose Tools > Account settings

thunderbird mac view account

 

Incoming Server Settings:

3. Check that the server settings are correct:

See the relevant screen below for either IMAP or POP  Mail Servers

IMAP settings:

  • Port is 143 (or 993 if you use SSL)
  • User Name is the full email address
  • Authentication is Password
  • Connection Security is None (or SSL – with port 993)

thunderbird mac troubleshoot imap

POP settings:

  • Port is 110 (or 995 if you use SSL)
  • User Name is the full email address
  • Authentication is Password
  • Connection Security is None (or SSL – with port 995)

thunderbird mac edit pop

Outgoing Server (SMTP) settings

4. Check the following settings:

  • Port is 587 (or 465 if you use SSL)
  • User Name is the full email address
  • Authentication is Password
  • Connection Security is None (or SSL – with port 465)

thunderbird mac check smtp

If the settings are incorrect, choose Edit and correct in the following screen, otherwise choose OK.

thunderbird mac edit smtp

Click OK. 

Thunderbird is now correctly set up.

Ensure that you use the latest version of Thunderbird.

Still struggling? Refer to our guide of common email problems or contact support@hetzner.co.za.