client side sender filter

email sender filter

RealSender’s “spamstop” app is an efficient anti-spam solution
when combined with a filter that splits messages
according to senders that are NOT in your address book.

Most modern email clients offer this feature.
Here are some configuration examples:

Microsoft 365 Outlook

in outlook settings enable: trust email from my contacts

Mozilla Thunderbird

in Thunderbird create a filter with rules 'From isn't in my address book'

Subsections of client side sender filter

Microsoft 365 Outlook

Outlook


Below is the “Settings” screen in Outlook.

In “Junk email”, check “Trust email from my contacts”.
Press [Save] to record the changes.


settings

junk email

trust email from my contacts


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Mozilla Thunderbird

Thunderbird


Below is a screenshot of the “Message filter” tool in Thunderbird.

Add conditions with the “Match ALL of the following” option:

  • From isn’t in my address book, Personal Address Book
  • From isn’t in my address book, Collected Addresses

Perform these actions: Move Message to: Spam.


anti-spam filter


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