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Mozilla Thunderbird – Set-up & synchronisation

Support > > Set up & synchronisation

With Mozilla Thunderbird you have the option of setting up the MailPro email account via IMAP. You can integrate the MailPro calendar with «Lightning», the official Mozilla calendar extension. At present, address books cannot be integrated in Thunderbird.

To set up your MailPro email address and the calendar, follow these steps:

1. Add email address

If you have not yet set up a mailbox in Thunderbird, click on «Accounts» → «Create new account» and then «Email» to configure a new email account.

2. Set up account

Enter the required fields.

Your name: In the name field, you enter your first and last name or your company name. (This is entirely up to you.)

Email address: Enter the email address you wish to configure. If you are unsure whether the address has already been set up on the server, refer to the guide on setting up an email address for MailPro in My Panel.

Password: The password you selected for the email address in My Panel or supplied with your MailPro order.

Remember password: Select this option if you want to save the password so that you do not have to enter it each time you check your emails.

Then click «Next».

Alternative access options

Alternatively, in the main Thunderbird menu, click on «Settings» → «Account settings»…

…and in the pop-up that now appears click on «Account actions» → «Add email account…», …

…to open the following dialogue box. Enter the data as you did in step 2.

3. Edit server settings

The settings automatically detected by Thunderbird cannot be used for MailPro, which has its own server. After the recommended server settings are displayed, click on the «Edit manually» button.

4. Enter manual server configuration

You can leave the values «Your name», «Email address» and «Password» provided they were correctly entered in the previous step.

In the lower section, enter the following settings:

Incoming mail server: select «IMAP» as account type.
Server address: The name of the incoming mail server for MailPro is «».
Port: 143
Authentication: Password, normal

Outgoing mail server: SMTP
Server address: The name of the outgoing mail server for MailPro is «».
Port: 465
Authentication: Password, normal

User name (Incoming and outgoing mail server): The user name is the email address you wish to configure.

Then click on the «Finish» button to continue the configuration.

5. Add security exceptions and finish

To authorise the IMAP link to the MailPro-Server with STARTTLS via port 143, a «security exception» must be added in Thunderbird. To do this, click on the «Confirm security exception» button.
Once the connection is established, any communication between MailPro-Server and Thunderbird will be encrypted. You can find further information on SSL/TLS encryption for emails here.

The configuration of the MailPro account for email use is now complete.

6. Set up calendar with Thunderbird «Lightning» plugin

To integrate your MailPro account in Mozilla Thunderbird you will need the Mozilla plugin «Lightning».

If you have not installed it yet, click on «Add-ons» in the main Thunderbird menu.

7. Look for add-ons

In the search bar at the top right, in the «Search» section, enter the term «Lightning» and then on the «Lightning» plugin, click on the «Install» button.

8. Restart Thunderbird

After «Lightning» is installed, Mozilla Thunderbird must be restarted. To do this, click on the «Restart now» link.

9. Open Calendar tab

Once Mozilla Thunderbird has restarted, switch to the calendar. One way of doing this is to click on the «Switch to calendar tab» button (icon with calendar view) at the top right.

10. New calendar

To add the MailPro calendar in the Mozilla Thunderbird calendar tab, right-click on the standard «Private» calendar and select «New calendar…».

11. Calendar location

The dialogue box that now appears will request the location of the calendar you wish to add. Select «In the network» and then click «Next».

12. Enter calendar address

You can now set the calendar format. For the MailPro calendar select «CalDAV».

The correct address (URL) of your CalDAV calendar from MailPro is composed as follows:
Without SSL:
With SSL:

More information on finding the correct address of another MailPro calendar can be found here.


Only select «Offline support» if you plan to also use the calendar without active Internet connection.

Then click  «Next».

13. Customise calendar

You can now give the new MailPro calendar a unique name and colour so that you can differentiate it from other calendars within Thunderbird. You can also choose whether reminders of appointments in your calendar should be shown, and which email address the calendar belongs to. The logical selection is the previously configured email address of your MailPro account.

Then click «Next»

14. Enter login details

The first connection with the server now starts. To access your MailPro calendar, you must enter the relevant login details. To do this, enter the email address of your MailPro account and the associated password. To ensure that you do not have to enter this information anew with every connection, activate the «Use the password manager to save this password.» option and click on «OK». Close the dialogue box by clicking on «Finish».

15. Calendar configuration complete

Your MailPro calendar is now correctly configured in Mozilla Thunderbird. Events in the calendar of the Groupware functions of MailPro are now mutually synchronised with the new calendar in Mozilla Thunderbird.

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