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Thunderbird Email client setup on ISPManager

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Email Migration process when moving from a VPS to a Cloud / Elastic VPS (Thunderbird)

The email service on new servers is current and there are differences that need to be taken into consideration once the new server is live.

Our best recommendation is to setup a completely new email profile on any email client that is being used.

 Here are some considerations:

  1. Make a backup of mails on your local computer. There is no direct option from Thunderbird to export your emails. You can find details on where to find the data files on your computer at:


Add the new email address using either IMAP or POP. If you connect multiple devices / computers to an email account, IMAP is recommended since it will sync data with the server. It may be necessary to check with your IT person in case there is a restriction for any of these protocols. To add a new email account in Thunderbird, follow these steps:


Open Thunderbird and go to File -- > New --> Existing Email account

Enter your information and click on Continue:

You will get a screen like the following:


Click on Manual config, this will enable the fields so that you can modify the values. The settings should look similar to the following:


Server hostname information should have been provided by the Technician that is working on your migration.

Please use the following settings:

SSL should be set to None, IMAP port: 143 (or if you prefer POP use 110), SMTP port can be 25 (if it is blocked use 587), authentication must be Normal Password, and username will be the full email address. Once configured click on Done

You may get a warning like the following:


Click I understand the risks and click Done

You have now successfully added a new account into Thunderbird.


If you have any problems, please contact

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