List Cost Checkfree · runs in your browser · your list never leaves it

Stop paying for profiles that will never buy

Klaviyo bills by active profiles; suppressed and unsubscribed profiles don't count (Klaviyo help). Export your profiles, drop the file here, and see which segments are dead weight or likely bots, what they've earned you, and the tier you'd drop to if you suppressed them.

1. Profile export

In Klaviyo: Audience → Lists & segments → a segment of everyone who can receive email → Manage → Export, and include the engagement and value properties (Last Open, Last Click, Last Active, Created, Historic Customer Lifetime Value, Email Marketing Consent) if you can. Any CSV with an email column works; missing columns just mean fewer checks.

Want it to stay clean?

We're building List Cost Check as a monthly check on your live account: new bot bursts and dead weight flagged before the next tier, with the revenue impact shown. Get early access (free).

Has your email bill jumped recently, or a bot wave hit your signups? Tell us what happened (4 questions). Built by Hieu Tran with AI agents; not affiliated with Klaviyo.