Check whether an email address is active and currently accepting mail. BillionVerify connects to the mail server over SMTP to confirm live inboxes in under 2 seconds. No signup, 100 free daily checks.
Enter any email address to check if it is active. BillionVerify validates syntax, resolves MX records, and connects directly to the mail server to confirm the inbox is live and accepting incoming messages.
Six verification layers confirm whether an email address is active and ready to receive mail.
Checks format and structure for typos, invalid characters, and malformed addresses.
Verifies the domain exists and is configured to receive email.
Confirms active mail server records are present for the domain.
Connects directly to the mail server to confirm the mailbox accepts mail.
Flags temporary email services from a database of 10,000+ known domains.
Identifies generic addresses like info@, support@, and admin@ that hurt engagement.
Four automated steps confirm whether an email inbox is currently active.
Validates email syntax and detects common typos or malformed addresses.
Checks domain existence and resolves MX records to confirm mail delivery is possible.
Connects to the mail server and tests whether the mailbox accepts incoming mail.
Scores the address for disposable, role, catch-all, and spam trap risk.
<2s
Response Time
Average SMTP verification
99.9%
Accuracy
Multi-layer validation
100
Free Daily Checks
No signup required
6
Validation Layers
Per address checked
Each tool focuses on a specific risk type.
Temporäre E-Mail-Dienste erkennen und blockieren, bevor sie Ihre Liste verunreinigen.
E-Mails erkennen, die wahrscheinlich zurückgesendet werden, um den Absenderruf zu schützen.
Mail-Server identifizieren, die alle E-Mails akzeptieren, unabhängig vom tatsächlichen Postfach.
Generische Rollenadressen wie info@, support@, admin@ herausfiltern, die das Engagement senken.
The checker validates syntax, looks up domain MX records, and then connects to the mail server over SMTP to perform a live handshake. This directly confirms whether the inbox is active and accepting incoming mail — returning a result in under 2 seconds.
A non-active email means the mailbox is no longer accepting incoming mail. This could be because the account was closed, suspended, or the domain's mail server is offline. Sending to inactive addresses produces hard bounces that damage your sender reputation.
BillionVerify achieves 99.9% accuracy by combining DNS lookups, MX record resolution, and direct SMTP verification. The SMTP handshake is the most reliable way to confirm whether a mailbox is currently active.
Remove inactive addresses from your mailing list immediately. Sending to them causes hard bounces, which tell email providers your list is low quality and can lead to your domain being blacklisted. Use BillionVerify to clean your list before every send.
Yes. You get 100 free active email checks every day with no signup and no credit card required. Every check includes full SMTP verification and MX record analysis.
No. All checks run in real time and we never store the addresses you submit. Data is encrypted in transit and deleted immediately after processing.
Entdecken Sie alle leistungsstarken Funktionen, die BillionVerify bietet
100 free checks daily. SMTP verification confirms active inboxes in under 2 seconds.
100 free checks daily · No signup required · Results in under 2 seconds
