How do I verify a Proton Mail email address?

You can use our real-time tool to ping the proton.me mail servers directly. Our system checks the mailbox existence without sending an actual email.

Does the Proton Mail verifier detect full mailboxes?

Yes, our 16-point engine identifies if a Proton Mail inbox is over capacity, which is a common cause of hard bounces.

DIRECT_MX_ACCESS: @proton.me

Verify Proton Mail emails with 98% accuracy.

Proton Mail is a privacy- and security-oriented email provider offering persistent inboxes on proton.me, with an emphasis on encryption, reduced tracking, and user control. It is offers custom-domain hosting options for professionals for privacy-sensitive users in Switzerland.

Perform a technical SMTP lookup of any @proton.me recipient to confirm mailbox existence without sending a single message.

Domain Target

@proton.me

Industry

Secure Email

Handshake Speed

< 50ms Avg

Security Audit

ISO 27001 / SOC2

Instant Proton Mail Check

Enter an email address below to run a real-time verification via our primary 16-point engine.

Need to verify a full list? Click here.

Domain Health Check

We verify the MX record configuration for Proton Mail to ensure the recipient infrastructure is active and capable of receiving external traffic.

Mailbox Integrity

Our cluster simulates an SMTP delivery attempt to @proton.me. If the mailbox is full, disabled, or non-existent, our engine flags it instantly.

Reputation Protection

Cleaning your Secure Email leads through our 16-point engine reduces bounce rates by up to 98%, keeping your sender IP off global blacklists.

Common Questions About Proton Mail Verification

Is it safe to verify @proton.me emails?

Yes. Our process is non-intrusive. We use a technical SMTP handshake to communicate with Proton Mail servers without ever sending a real message to the recipient.

How accurate are the results for Proton Mail?

Our 16-point engine is optimized for Secure Email domain protocols, delivering 98% accuracy by detecting if the mailbox exists and can receive email.

Can I verify Proton Mail emails in bulk?

Absolutely. You can upload a CSV or Excel spreadsheet containing thousands of @proton.me addresses to our list cleaning tool for instant processing.