What "verified" means and why it matters

Before anything is sent, each address is checked to confirm it will accept mail. Addresses that do not pass are held back rather than sent to.

Why it matters more than volume

Sending to dead addresses produces bounces. Bounces damage the reputation of your sending domains. Domain reputation is what decides whether your mail reaches inboxes at all.

So a smaller verified list beats a bigger unverified one, every time. A campaign to 300 verified people will outperform one to 900 unverified people, and it will not burn your domains doing it.

When it runs

Verification runs when you approve a campaign. It is the first step that spends real per-contact money, which is why the free tier stops there — everything before it is free.

What this means for your numbers

The contactable count after verification is smaller than the count before it. That is the gate working. See Why is my contact count smaller than my company count? for the full picture of where numbers shrink.

Catch-all domains

Some domains accept mail for any address, which makes verification inconclusive. These are handled conservatively by default.

Updated on: 17/08/2026