include:_spf.protonmail.ch – Proton Mail
Short answer: include:_spf.protonmail.ch lets Proton Mail's mail servers pass SPF for your domain. It costs 2 of the 10 DNS lookups SPF allows (checked live).
| Service | Proton Mail |
|---|---|
| Lookups | 2 of the 10 DNS lookups SPF allows (checked live) |
| Record now | v=spf1 ip4:185.70.40.0/24 ip4:185.70.41.0/24 ip4:185.70.43.0/24 ip4:79.135.106.0/24 ip4:79.135.107.0/24 ip4:109.224.244.0/24 include:_spf2.protonmail.ch ~all |
Do you need it?
Yes, if you send mail through Proton Mail with your own domain. It is the include our Proton Mail setup guide uses. Proton lists v=spf1 include:_spf.protonmail.ch ~all.
Who uses it
In our scan of top websites on 23 Oct 2026:
- 15 of the 2,214 world's top-3,000 sites that publish SPF (0.7%)
- 1 of the 1,961 India's top-3,000 sites that publish SPF (0.1%)
- 0 of the 428 Indian government sites that publish SPF (0.0%)
Add it the right way
- Keep one SPF record per domain:
v=spf1 include:_spf.protonmail.ch ~all, plus your other senders in the same record – SPF generator. - Stay under 10 lookups in total; every include counts, nested ones too.
- SPF alone isn't enough for Gmail, Yahoo and Outlook: turn on DKIM and publish DMARC.
Check your domain
After the fix, send a test email to see SPF, DKIM and DMARC pass on a real message, then keep an eye on it: free DMARC monitoring shows every service that sends mail as your domain and which ones fail, in plain English.
Rather not touch DNS? I set up SPF, DKIM and DMARC without breaking your other senders,
with a before/after report.
Get it fixed on Fiverr
Get it fixed on Fiverr
Prefer to do it yourself? Get the step-by-step Fix Kit ($15) – 28-page guide, checklist, 20+ providers.