Configure Thunderbird with Infomaniak: Complete Guide

Mozilla Thunderbird is a free, open-source email client available on Windows, Mac, and Linux. It supports IMAP perfectly and has native CalDAV/CardDAV integration since version 102. It\'s an excellent choice for using your Infomaniak account.

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Download Thunderbird

If you haven\'t already, download Thunderbird:

• thunderbird.net (official website)
• Available for Windows, macOS, and Linux
• 100% free and ad-free

Automatic Configuration (Recommended)

Thunderbird usually detects Infomaniak settings automatically:

Manual Configuration

If automatic detection fails, configure manually:

Connection Settings

Applying Manual Configuration

1. In the wizard, click "Manual config"
2. Enter the settings from the table above
3. Click "Re-test" to verify
4. If everything is green, click "Done"

Setting Up the Calendar (CalDAV)

Since Thunderbird 102, the calendar is natively integrated with CalDAV support.

Add Your Infomaniak Calendar

1. Click the Calendar icon (or Ctrl+Shift+C)
2. In the left panel, right-click → New Calendar
3. Choose On the Network
4. Select CalDAV
5. Enter the URL: https://caldav.infomaniak.com/calendars/YOUR_EMAIL/
6. Enter your credentials when prompted
7. Name the calendar and choose a color
8. Click Subscribe

Setting Up Contacts (CardDAV)

Thunderbird also supports CardDAV for syncing your contacts:

1. Click the Address Book icon
2. Menu File → New → Remote Address Book
3. Enter the URL: https://carddav.infomaniak.com/addressbooks/YOUR_EMAIL/
4. Enter your credentials
5. Name the address book
6. Confirm

Recommended Settings

IMAP Folders

Configure special folders to match the server:

1. Right-click on your account → Settings
2. Copies & Folders section
3. Map:
   • Drafts → Drafts (on server)
   • Sent → Sent
   • Archives → Archive
   • Templates → Templates

Synchronization

To have Thunderbird keep a local copy of emails:

1. Right-click on the account → Settings
2. Synchronization & Storage section
3. Check "Keep messages for this account on this computer"
4. Select the folders to synchronize

Automatic Checking

1. Account Settings → Server Settings
2. Set "Check for new messages every X minutes"
3. 5 minutes is a good compromise

Email Signature

1. Account Settings → Main section
2. Check "Use HTML"
3. Write your signature in the text area
4. Optionally, import a signature from an HTML file

Useful Extensions

Thunderbird supports extensions to enhance its features:

• Provider for Google Calendar – If you also have a Google calendar
• Thunderbird Conversations – Gmail-style conversation view
• QuickFolders – Quick navigation between folders

Access extensions via: Menu → Add-ons

Troubleshooting

SSL Certificate Error

If Thunderbird displays a certificate error:

• Verify you\'re using mail.infomaniak.com
• Make sure your system date/time is correct
• Try clearing Thunderbird\'s cache

Unable to Send Emails

• Check the SMTP settings (port 465 with SSL or 587 with STARTTLS)
• Make sure SMTP authentication is enabled
• Check whether your ISP blocks port 25/465/587

Calendar Not Syncing

• Check the CalDAV URL (replace YOUR_EMAIL with your actual address)
• Try deleting and recreating the calendar
• Verify your credentials

Advantages of Thunderbird

• Free and open source – No cost and no tracking
• Cross-platform – Windows, Mac, Linux
• Native CalDAV/CardDAV – No plugin needed for Infomaniak
• Privacy-friendly – No data sent to Mozilla
• Extensible – Numerous add-ons available

Conclusion

Thunderbird is the ideal companion for an Infomaniak account, especially if you\'re on Linux or looking for a free alternative to Outlook. Setup takes just a few minutes and gives you a complete email client with synced calendars and contacts.

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