Yes. You can verify any @Proton.me address in real time with a direct SMTP handshake that provides 99.7% accuracy. Proton.me is operated by Proton AG, runs 2 mail servers, enforces 2 of 3 authentication standards, and is currently responding to SMTP.
Every check returns one of three clear outcomes so you know exactly what to do with the address.
The mailbox exists and accepts mail. Send with confidence, the address is deliverable.
The mailbox does not exist, is disposable, or will hard-bounce. Remove it to protect your sender reputation.
The server is catch-all or greylisting, so existence cannot be confirmed. Send selectively and watch engagement.
proton.me publishes 2 MX records. The primary mail exchanger is mail.protonmail.ch, hosted by protonmail.ch, and it is currently reachable and answering SMTP. Mail is routed through these servers in priority order, lowest number first.
| Priority | Hostname | IP | Status |
|---|---|---|---|
| 10 | mail.protonmail.ch | 185.205.70.128 | Reachable |
| 20 | mailsec.protonmail.ch | 176.119.200.129 | Reachable |
220-mailinosl103.protonmail.ch ESMTP PostfixYes. proton.me is a valid email provider, operated by Proton AG. Addresses are persistent and real mail reaches a genuine recipient. Individual mailboxes still go stale, so verify each one before you send.
A live SMTP handshake connects to Proton.me's mail server and asks whether the mailbox exists using the RCPT TO command, without ever transmitting a message. The recipient never sees the check.
Each address runs through 30+ checks including SMTP existence, catch-all detection, role-account filtering, and disposable matching. The same engine has verified billions of addresses since 2012.
Every unverified address is a gamble. Here is what happens when you skip verification and mail a list that has not been cleaned.
Free inboxes get abandoned constantly. Verification drops the dead proton.me mailboxes before you mail them.
Mistyped proton.me addresses fail a real SMTP check, so they never turn into a hard bounce.
A clean list keeps your bounce rate low, and a low bounce rate is what protects inbox placement on a big send.
Mailing only live proton.me addresses raises every rate that matters: opens, clicks, and replies.
Proton.me is Proton AG, registered through MarkMonitor Inc. and first seen Oct 10, 2010.
proton.me is the primary domain for Proton Mail, the world's largest encrypted email service operated by Proton AG in Geneva, Switzerland. Founded in 2014 by CERN scientists, Proton Mail provides end-to-end encrypted email, calendar, cloud storage, and VPN services under Swiss privacy jurisdiction.
proton.me implements strict SPF, DKIM, and DMARC enforcement. All messages are end-to-end encrypted by default between Proton users. Proton AG operates under Swiss Federal Data Protection Act (FADP), providing some of the strongest privacy protections available.
The proton.me mail servers enforce recipient verification and reject invalid addresses. The domain does not operate as catch-all. Proton's security-first infrastructure applies strict filtering.
For delivery to proton.me, full SPF, DKIM, and DMARC authentication is essential. ProtonMail users are highly security and privacy conscious. Clean, well-authenticated messages from reputable senders deliver reliably.
Upload a CSV or TXT list of Proton.me addresses to the bulk email verifier. Every address runs through a live SMTP handshake plus catch-all, role-account and disposable detection, and you download a clean list when processing completes. For real-time checks at signup, use the real-time email verification API.
CSV or TXT with one email per line. No formatting needed.
Each Proton.me address is checked with a live server handshake.
Get a verified list with status codes, risk flags, and catch-all detection.
Pay as you go. No subscriptions, and credits never expire.
Everything about verifying email at this domain.
Yes, proton.me is a valid and active email domain operated by Proton AG. It is the newer domain for ProtonMail, the Swiss privacy-focused email service with end-to-end encryption.
No, proton.me is not a disposable email provider. It is a permanent privacy-focused email service from Proton AG, the company behind ProtonMail, ProtonVPN, and other privacy tools.
Proton.me uses Proton's own mail infrastructure hosted in Switzerland. MX records point to mail.protonmail.ch and mailsec.protonmail.ch, the same servers used for protonmail.com.
Yes, you can send marketing emails to proton.me addresses with proper consent. Proton users tend to be privacy-conscious, so transparent opt-in practices and clear unsubscribe options are essential.
Proton.me addresses can be verified via SMTP checks with definitive accept/reject responses. Rate limiting is applied to prevent enumeration. Plus-addressing is supported for creating aliases.
Upload a CSV or TXT list to the bulk email verifier. Every address runs through 30+ checks including SMTP existence, catch-all detection, role-account, and disposable matching. Processing time depends on list size.
99.7% accurate using a direct SMTP handshake with proton.me's mail servers, the same engine that has verified billions of addresses since 2012.
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