Changing SMTP Port in Mozilla

As ISP’s and webhosts are starting to offer alternative ports for SMTP, some may ask how to change the port in Mozilla/Thunderbird. So here is a rundown step by step (don’t worry, it’s really easy).

In Mozilla:
Go to Mail, then in the Edit menu select “Mail & Newsgroups Account Settings”

In Thunderbird:
Go into the Tools menu and select “Options”

Go down to “Outgoing Server (SMTP), and change the “Port” to the desired port number

Say “OK”.

That’s all there is to it, you will now connect with the desired port.

Contact your ISP for a list of alternative ports.

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2 Responses to “Changing SMTP Port in Mozilla”

  1. Mathias Vaagt says:


    any update to this for Thunderbird vs 1.0? I canĀ“t find the related menu in this version…
    Thanks, and merry christmas

  2. In the newer versions of Thunderbird, that menu is now located in the Tools menu, under “Account Settings”

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