this post was submitted on 11 Jun 2026
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Privacy
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This is how I use Proton. The setup process is really easy with clear instructions on what to configure in your DNS provider.
The only problem I have is that gmail rejects emails from my domain, I have to use proton’s address.
If Gmail is rejecting your custom domain, you haven't setup your SPF, or DKIM records etc for you custom domain that authorizes proton to be a valid email sender.
E.g when Gmai receives an email from a custom domain it will look up records to confirm the mail server sending it is valid.
Checkout https://proton.me/support/anti-spoofing-custom-domain or search proton SPF DKIM for guides.
You wouldnt have issues sending from a proton domain as they already have these in place for you.
You need to build up reputation before you can beat spam filters. This happens all the time to new domains. Make sure to have Dmarc and Dkim configured.
How do I build up reputation? Should I keep trying to send from that domain even if it gets rejected?
I have all the DNS things configured as per Proton’s instructions.
Well, that sucks. Guess you must hate the people who reject you. What domain? yy?
Yes, but normally I don’t send a lot of emails anyway.
If I send to any @gmail.com address, it’s rejected, unless I change the From to my @proton.me