Prolateral Consulting Ltd
Prolateral Consulting Ltd
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Setup examples

Prolateral offers primary and backup domain (DNS) services, with servers in key geographic locations providing the best service possible.


How do I set up outbound SMTP on Thunderbird 91.x?
How do I set up outMail on Thunderbird?


Follow the guide below to configure Thunderbird 91.x to send emails using the outMail service.

Launch Thunderbird from the Desktop or from the Start > All Programs menu. The icon looks like the one shown below.

Mozilla Thunderbird icon

Right click on the account and select settings.

Thunderbird Account Settings

An additional tab entitled 'Account Settings' will appear, select the "Outgoing Server (SMTP)" left-hand menu option.

Click on the desired account and select edit.

Thunderbird Outgoing Server Settings

Another window will appear called "SMTP Server".

Enter the "Description" as something meaningful, such as "outMail"

Set the "Server Name" to, and set the "Port" (See below for port options)

Select the security option as you wish in the Connection security drop down.

Select the option "Normal Password" in the Authentication method

Enter the username you were provided for outMail.

Click OK to return to the previous window

Mozilla Thunderbird SMTP Server Settings

You can now close the "Account Settings" Tab.

The first time you send a message you will be prompted for the password, enter the outmail password as provided in your welcome email.


Video Tutorial


Summary of server details

Outgoing server

As provided in your signup email.

Outgoing server protocol


Outgoing server port

25, 465, 587, 2525 or 8025

Authentication Type

Basic Authentication, SSL and TLS supported


As provided


As provided

Uninstalling / Removing outMail

To change your outgoing SMTP server settings away from outMail simply follow the setup guide above and where asked to enter the outgoing SMTP mail server address and login credentials please use those provided to you for the service provider you are moving to.

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