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Migrate Contacts and Calendars to Microsoft 365

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When you sign up for your Microsoft 365 (Formerly Office 365) subscription, your existing contacts and calendars will have to be imported from your current email client. If you are using one of the webmail clients that HostGator offers, the steps below will walk you through how to export them and then how to import them into Microsoft 365.

Exporting from Horde


  1. Login to the Horde webmail client.
  2. Select Address Book.

    HostGator Horde Address Book

  3. Then click on Import/Export on the left-hand toolbar.

    HostGator Horde Address Book Import/Export Button

  4. Underneath Export Address Book, in the Select the export format drop-down, choose Comma Separated values.

    HostGator Horde Export Address Book

  5. Select the address book to export in the next drop-down, and then click Export.


  1. Login to the Horde webmail client.
  2. Click on Calendar.

    HostGator Horde Calendar Tab

  3. Click on the pencil next to the calendar you want to export.

    HostGator Horde Edit Calendar

  4. Choose the Export tab.

    HostGator Horde Calendar Export Tab

  5. Click  Calendar ICS file next to Export ICS file.

    HostGator Horde Export ICS File

Exporting from Roundcube


Roundcube address books are exported as a .vcf file. However, Microsoft 365 does not support the import of .vcf files. So, you will have to convert them to a .csv file once you export them.

  1. Login to the Roundcube webmail client.
  2. Select Contacts on the top right-hand side.

    HostGator Roundcube Contacts Button

  3. Click on the down-arrow next to Export.

    HostGator Roundcube Export

  4. Select Export All from the drop-down.

    HostGator Roundcube Export Options

  5. Once you convert the VCF to a CSV file, you can follow the steps below for Importing contacts to Microsoft 365.
Note: One way of converting from the .vcf file to a .csv file is by importing them into the Horde client. You can do this by clicking on down-arrow next to your username, selecting Horde, and then following the steps for Importing Contacts to Horde.
HostGator Roundcube Export Options 
Then follow the steps outlined above for Exporting from Horde.
Unfortunately, the SquirrelMail client does not allow you to import or export contacts, nor does it have a calendar.

Importing to Microsoft 365


  1. Login to your Microsoft O365 account and select the People App.
  2. To import the .csv contact file, the option for Try the new Outlook will need to be toggled:

    Try New Outlook Toggle (Off)

  3. Select Manage then Import Contacts, Browse and import your contact list .csv file.


  1. Login to Microsoft 365 and select the Calendar App.
  2. On the left select Import Calendar, then choose the option From File.
  3. Hit Browse to find your .ics file then select Import.

Wait for uploads to complete. Once finished, your webmail content should show up in your Microsoft 365 App.