Email verification

Email verification keeps your lists clean by filtering out invalid and risky addresses before you send to them. It runs automatically, it's managed entirely by us, and it's included in your plan at no extra charge — there's no separate verification service to buy or configure.

Automatic and included

You don't run a verification provider or pay per check. EmailFlow AI verifies contacts for you as part of your plan. Verification happens at the moments that matter most — when contacts are imported or added, and again as a safeguard before a campaign goes out — so bad addresses are caught early and never reach your send.

How verification works

Format and DNS/MX checks — addresses are validated for correct syntax and for a domain that can actually receive mail.
Risk assessment — invalid, undeliverable, and high-risk addresses are flagged.
Result caching — a verified result is cached for roughly 30 days, so the same address isn't re-checked needlessly.
Resilient processing — verification runs across resilient, redundant infrastructure with failover, so it keeps working reliably at volume.

verified

Because verification is built in, you don't connect or maintain any verification server. We provide it as a managed service on every plan, at no extra charge.

Why it matters

Sending to invalid addresses drives up bounces, which mailbox providers read as a signal of a careless sender — hurting placement for everyone on your list. By stripping bad addresses before they're emailed, verification protects your sender reputation, improves deliverability, and stops you wasting sends on addresses that were never going to receive your mail.

What you'll see

Unverified or risky contacts are excluded from sends automatically, so your campaigns reach real inboxes. Combined with domain authentication and your connected sending provider, automatic verification is a core part of keeping you in the inbox — with no effort on your part.

Frequently asked questions

Do I pay extra for verification? No. Automatic verification of the contacts in your plan is included at no additional charge — there's nothing to buy or configure.

Will it slow down my sends? No. Recent results are cached for about 30 days, so addresses you've already checked don't need re-verifying, and sending stays fast.

What happens to invalid addresses? Invalid and high-risk addresses are filtered out before delivery, so they never count against your sending reputation. This keeps bounce rates low and your deliverability strong without any manual list cleaning.