Test filter rules against sample messages before deploying them. Matches are highlighted in real time.
Rule type
Matched messages are junked
Simulated contacts. A CONTACT rule only matches people
saved in your contacts. This page has no access to yours, so it uses a
fixed pair — messages from any other sender are treated as not-a-contact
and never match, inverted or not.
Jack Smith — +1 555-010-1234
Jill Smith — +1 555-010-5678
SENDER: Case-insensitive substring match against the sender address. Same as Kotlin sender.contains(pattern, ignoreCase = true).
This rule type tests the sender address, exactly as the app does.