Rank #1,726Updated November 10, 2026
proton.me
Proton: Privacy by default
The site runs on Astro, Content Security Policy, HSTS and 2 other technologies. Its email security grade is B. Its SSL certificate is issued by Let's Encrypt and is valid for 76 more days.
- Domain age
- —
- Technologies
- 5
- Email security
- B
- SSL days left
- 76
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 185.70.42.45 | 177 |
| MX | mail.protonmail.ch 10 | 1073 |
| MX | mailsec.protonmail.ch 20 | 1073 |
| NS | ns1.proton.me | 1200 |
| NS | ns2.proton.me | 1200 |
| NS | ns3.proton.me | 1200 |
| CAA | issue 0 letsencrypt.org | 1200 |
| CAA | issue 0 sectigo.com | 1200 |
| TXT | yandex-verification: 95a7888a0f987e6a | 3453 |
| TXT | v=spf1 include:_spf.protonmail.ch ~all | 3453 |
| TXT | linkedin-site-verification=01e79150-bf68-4e0c-ad04-822dc1015b3b | 3453 |
| TXT | protonmail-verification=5262a92f988e64f1be1362138befdf1e19d6a4c1 | 3453 |
| TXT | google-site-verification=2FGIDo-Gf-lWE6t_gWd9gpPTehHD85hbNiEujPVgysc | 3453 |
| TXT | google-site-verification=4UIZgETX8lGnv0WwpeJJbszo9daKOdXXYBKCA2XLf94 | 3453 |
| TXT | google-site-verification=MUjtKY-4uQAjE92Z2-s1nm9m4mvdqY2z6HCvi_Bj4so | 3453 |
| TXT | google-site-verification=QviHfE1VQ57-tDmDLxM6BQH1mdgvdQ_0QsIvCht2IaU | 3453 |
| TXT | google-site-verification=_ayl1WqWIag2WkIbK4sNg_x3NCT5nYOl_DgtFPTYKeg | 3453 |
| TXT | zoom-domain-verification=ZOOM_verify_5990c1fbb09d4c6aba062cded6cbdf06 | 3453 |
Technology stack
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, YR1, Let's Encrypt |
| Expires | January 25, 2027 |
| Days remaining | 76 |
| Protocol | TLSv1.3 |
| Names | *.pr.tn, *.proton.me, *.storage.proton.me, pr.tn, proton.me |
Email security
BScore 86/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
- warnDMARC has no rua= address, so you receive no reports about mail sent as your domain.
- goodSPF record found.
- goodSPF ends with ~all: servers you have not listed are marked as suspicious (soft fail).
- goodDMARC policy is quarantine: failing mail goes to spam. Move to p=reject for full protection.
- goodDKIM keys found (selector: protonmail).
- good2 MX record(s) found. Mail is handled by Proton Mail.
- goodMTA-STS is enforced: other servers must use verified TLS when sending you mail.
- goodTLS-RPT is set up: you receive reports about failed encrypted deliveries.
- goodBIMI record found: supporting inboxes can show your brand logo.
Homepage metadata
| Title | Proton: Privacy by default |
|---|---|
| Description | Over 100 million people use Proton to stay private and secure online. Get a free Proton account and take back your privacy. |
| Language | en |
| Canonical | https://proton.me |
| Structured data | WebPage, Corporation, WebSite, SoftwareApplication, WebApplication |
| Indexable | Yes |
| Word count | 1969 |
About proton.me
What technology does proton.me use?
We detected 5 technologies on proton.me, including Astro, Content Security Policy, HSTS, Tailwind CSS, YouTube.
Does proton.me protect its email with SPF and DMARC?
proton.me scores 86/100 (grade B) for email security. DMARC has no rua= address, so you receive no reports about mail sent as your domain. SPF record found.
What are the name servers of proton.me?
proton.me uses ns1.proton.me, ns2.proton.me, ns3.proton.me.