How to Set Up DMARC for Proton Mail

Publish a DMARC record to protect your custom domain when using Proton Mail.

Quick Answer — The Record You Need

Record Type

TXT

Host / Name

_dmarc

Value

v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1

Proton Mail includes a DMARC record suggestion in the domain setup wizard.

Step-by-Step Setup

Configure SPF and DKIM

Set up SPF (include:_spf.protonmail.ch) and DKIM (3 CNAME records) for Proton Mail first.

View Proton's DMARC suggestion

Proton Mail suggests a DMARC record during domain setup. You can customize it.

Create the DMARC record

Add a TXT record at _dmarc.yourdomain.com.

v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1

Monitor reports

Review DMARC aggregate reports. Proton Mail typically aligns well.

Enforce the policy

After confirming clean reports, move to p=quarantine and then p=reject.

Common Gotchas

Proton Mail provides excellent SPF and DKIM alignment for custom domains.
If Proton Mail is your only email sender, you can move to p=reject relatively quickly.
Proton Mail suggests a DMARC record in their domain setup wizard. Use it as a starting point and customize the reporting address.

Verify Your Setup

After adding your DNS records, use our free DMARC checker to verify everything is configured correctly. DNS changes typically propagate within minutes, but can take up to 48 hours.

Frequently Asked Questions

Does Proton Mail support DMARC?

Yes. Proton Mail provides SPF and DKIM alignment and includes a DMARC record suggestion in the domain setup wizard.

Can I use p=reject with Proton Mail?

Yes. Proton Mail has strong authentication support. If it is your only email sender, p=reject is safe to use.

Does Proton Mail help me set up DMARC?

Yes. The domain setup wizard includes a step for DMARC and provides a suggested record value.