The mailbox exists
The receiving server accepted our probe for this exact address. Send with confidence.
RCPT TO → 250
Email deliverability bureau
VerifyPro opens a real SMTP conversation with every receiving server on your list — the same exchange your campaign would have — and reports what happens, before you hit send.
Transcript — session log
Four possible outcomes
No confidence percentages to interpret. Each address is sorted into one of four buckets, and each bucket tells you exactly what to do with it.
The receiving server accepted our probe for this exact address. Send with confidence.
RCPT TO → 250
The server rejected the address by name. Sending here produces a hard bounce — remove it.
RCPT TO → 550
A catch-all domain that accepts everything, or a role account like info@. It will arrive; someone reading it is another matter.
Catch-all · role · disposable
Greylisting or rate limits blocked a clear answer. We retry for 72 hours and never charge you for these.
RCPT TO → 4xx · timeout
The inspection, in order
Addresses are eliminated as early as possible. A malformed address never touches the network, and a domain with no mail exchanger never gets a handshake.
STEP 01
Parsed against RFC 5322. Malformed addresses are rejected before any network call is made.
STEP 02
We resolve the domain's mail exchanger records. No MX means no mail, and no reason to go further.
STEP 03
Checked against 180,000 known disposable domains and the role-account patterns that skew engagement.
STEP 04
We open a session with the receiving server and ask about the mailbox by name, then close without sending.
STEP 05
We ask about an address that cannot exist. If the server accepts that too, the domain accepts everything.
Pricing
Buy credits outright and use them whenever, or set up a standing order and get a lower rate every month. Unknown results are refunded on both, so you only ever pay for answers.
Starter
$39
10,000 credits
$0.0039 per address
Growth
$249
100,000 credits
$0.0025 per address
Scale
$649
500,000 credits
$0.0013 per address
Bureau
$1,099
1,000,000 credits
$0.0011 per address
Custom
Talk to us
Above 1,000,000
Volume rate on request
All plans include 100 free credits to start. No card required.
How many addresses each month?
Your allowance refreshes on the same day each month. Unused addresses roll over for one month, so a quiet January doesn't cost you anything. Change tier or cancel from the dashboard at any time — no notice period.
Monthly
$29/mo
10,000 addresses each month
$0.0029 per address
Saves 26% vs credits Start this standing orderStanding orders bill monthly and include the same 100 free credits to start.
Handling
Retention
Uploaded lists are removed the moment you collect your results, and automatically after 14 days if you don't. We never build a database from your contacts.
Compliance
Processing happens inside the EU. A data processing agreement is available on every plan and signed as standard on Bureau.
Integration
A single REST call returns a verdict in under two seconds. Batch jobs stream results as they finish, so you're never polling for a file.
Start with 100 free verifications. No card, no trial clock, no sales call.