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How to Add Safe Senders and Whitelist Email Addresses

Last updated: November 21, 2025
How to Add Safe Senders in Thunderbird

How to Add Safe Senders and Ensure Important Emails Reach Your Inbox in Thunderbird

Thunderbird is a popular email client that helps manage your emails efficiently. Sometimes, important emails can get lost in the spam filter. To prevent this, you can mark certain senders as safe. This guide will take you through the steps to add contacts to your safe senders list using various methods in Thunderbird.

Steps to Add Safe Senders in Thunderbird

  1. Add to Address Book:
    1. Open Thunderbird and go to your inbox.
    2. Find an email from the sender you want to mark as safe.
    3. Right-click on the sender's email address at the top of the email.
    4. Select Add to Address Book from the drop-down menu.
    5. Fill in any additional details if necessary and click OK.
    6. Tip: Adding a sender to your address book typically reduces the chance of their emails going to spam.

  2. Create a Message Filter:
    1. Click on the Tools menu and select Message Filters.
    2. Click New to create a new filter.
    3. Give your filter a name, e.g., "Safe Senders".
    4. Set the conditions to From is [email address].
    5. Choose an action like Move Message to and select the Inbox.
    6. Click OK to save the filter.
    7. Tip: Filters can automatically sort important emails to specific folders, ensuring you never miss them.

  3. Adjust Junk Mail Controls:
    1. Go to Tools > Account Settings.
    2. Under the desired account, select Junk Settings.
    3. Check the option Do not mark messages as junk if the sender is in: and select Personal Address Book.
    4. Click OK to save your settings.
    5. Note: This setting helps prevent emails from your contacts being marked as junk.

  4. Manually Mark Emails as Not Junk:
    1. Go to your spam or junk folder in Thunderbird.
    2. Select the email that has been incorrectly marked as junk.
    3. Click on Not Junk from the toolbar above the email to mark it as safe.
    4. Pro Tip: Regularly check your junk folder to catch any important emails and mark them as not junk.

By following these steps, you can effectively manage your Thunderbird inbox and ensure important emails from trusted senders never get lost in the shuffle. Remember to keep your address book updated and tweak settings as needed to adapt to your changing email habits.