Block lists

When you add blocked senders, Area 1 automatically marks all messages from these senders with a MALICIOUS disposition.

​​ Add a blocked sender

To create a new blocked pattern:

1. Log in to the Area 1 dashboard Open external link .

2. Go to Settings (the gear icon).

3. On Email Configuration, go to Block List > Blocked Senders.

4. Select + New Sender.

5. Enter the pattern information:

   • Sender: Enter one of the following types of pattern:

     • Email addresses, which must be a valid email.
     • IP addresses, which can only be IPv4. IPv6 and CIDR are invalid entries.
     • Regular expressions, which must be valid Open external link Java expressions.

   • Notes: Provide additional notes about the blocked sender pattern.

6. Select Save.

​​ CSV uploads

You can also upload a CSV file of multiple allowed patterns. The CSV file must be smaller than 150 KB, start with a header row of all required values, and contain no additional fields.

An example file would look like this:

Blocked_Sender, Notes
john.smith@email.com, John Smith
melanie.turner@email.com, Melanie Turner