Signup form is a leaky bucket. · ⏱ ≈ 5 min per week
Protect your welcome flow from signup bots
Your signup form gets bot submissions. Every fake email that enters the welcome flow is an auto-bounce on a brand-new conversation — the worst time for your sender reputation.
The statuses used below are explained in What each Securify status means.
Welcome flows are high-leverage sends: one per new subscriber, with heavy open-rate expectations at every inbox provider. Fake signups double-up the damage — the bounce hurts sender score and the delay pushes real subscribers' welcome emails into spam. Validate weekly to shrink the bucket.
In Klaviyo, create a 'Recent signups' segment
Left sidebar → Audience → Lists & segments → click Create segment (top-right). In the Segment builder, pick Properties about someone →Createdis in the last7 days. Name it something you'll remember.Run Securify on that segment
The dashboard lists every segment on your account. Click Check and tag on it, then Check and tag again once a week — the flow filter in the next step reads the tags.Add an exclusion to your welcome flow trigger
Flows → your welcome flow → Filter → exclude anyone wheresecurify_statusis one ofundeliverable, risky, disposable. Bots still enter the segment; they just never get the email.Measure
Check the welcome flow's bounce rate week over week in Klaviyo's flow analytics. A drop from 4–6% to <1% is typical after the first clean run.
Ready?
Open your dashboard and check the list you had in mind.