The Block/Allow List lets you create custom rules that always allow or always block specific email addresses, domains, or IP addresses.
Rules here override your verification results and fraud scoring so your own office IP is never blocked from your ads, your biggest client's email always gets through your lead forms, and a spammer's domain never does.
You'll find it in your dashboard under Customizations → Block/Allow List.
Allow vs Block
Every rule does one of two things:
✅ Allow - The value is never blocked. Emails always pass verification on your lead forms, and IPs are never excluded from your ad campaigns.
❌ Block -The value is always rejected. Emails are stopped on your lead forms, and IPs are excluded from your ad campaigns.
What a rule can apply to
Email address - Matches one exact address, like
[email protected].Domain name - Matches every email address at that domain, including subdomains. A rule for
example.comcovers[email protected]and[email protected].IP address - Matches visitors by IP. You can enter:
a single IP:
83.201.114.9a wildcard range:
196.10.252.*CIDR notation:
218.100.46.0/23
You can paste many IPs at once (one per line), and we'll add a rule for each.
Creating a rule
Go to Customizations → Block/Allow List.
In the New Rule card, choose Allow or Block.
Under Applies to, pick Email address, Domain, or IP address.
Enter the value (or paste a list of IPs).
Click Add Rule.
The rule appears at the top of Your Rules and starts working right away — lead-form rules take effect within about a minute, and IP exclusions are pushed to your ad accounts on the next sync cycle.
How email and domain rules work with email verification
Email and domain rules apply when you've turned on email verification for your lead forms (under Customizations → Detection Rules → Email Blocking). They work with both blocking options:
Block Emails — a visitor who enters a blocked email or domain sees the error message you configured, and the submission is stopped. An allowed email always goes through, whatever its verification result would have been.
Block IP Addresses — a blocked email or domain is treated as an invalid submission, so the visitor's IP is excluded from your ad campaigns. An allowed email never triggers an IP exclusion.
Allowed emails skip verification entirely, so they never count against your monthly verification limit.
Which rule wins
If more than one rule could apply to the same email, the most specific rule wins:
An email address rule beats a domain rule. You can block all of
gmail.combut still allow[email protected]— or allow all ofexample.combut block[email protected].If it's still a tie, Allow wins — we resolve conflicts in your favor, so you never lose a lead to a conflicting rule.
Each value can only have one rule at a time. To switch a value from Allow to Block (or back), use Modify on the existing rule.
Managing your rules
Filter by All, Allow, or Block, and search by value.
Modify a rule — this loads it back into the New Rule form so you can change it and re-add it.
Delete a rule with the trash icon. Deleting takes effect on lead forms within about a minute, and IPs are removed from your ad exclusions on the next sync.
Frequently Asked Questions
Do allowed emails use my verification credits?
No. Allowed emails skip verification entirely.
Are emails added to audience exclusion lists?
No. Emails are only blocked at the form level or using the user's IP address. They are not provide with our audience exclusions lists.
Will a Block rule stop form submissions if I only have "Verify Emails Only" selected?
No. Rules only stop submissions when your email handling mode is Block Emails. In
Block IP Addresses mode, the form still submits, but the visitor's IP is excluded from your ads. In verify-only mode, nothing is ever blocked.
Do domain rules cover subdomains?
Yes. A rule for example.com also matches emails from mail.example.com.