SPF

To authorize Proton Mail to send emails on your behalf you will have to include it in your SPF record. The SPF record mechanism used by Proton Mail is shown below.

include:_spf.protonmail.ch

DKIM

Proton Mail supports DKIM signing for your custom domain. For more information on SPF and DKIM please click on the button below.


Create a free OnDMARC account to test your configuration. 

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