Mullvad has operated public encrypted DNS (DoH) servers since 2022. They are unnecessary when using Mullvad VPN — traffic is already encrypted and Mullvad VPN's internal DNS handles all queries.
If you already use Proton Mail, I strongly recommend against using ProtonVPN because you’re coupling yourself too hard to Proton. At least, if your threat model is high risk
ProtonVPN if you can stomach one CEO once praised trumps choice of some anti euh oligopol(?) lawyer.
If I’m going to move away from mullvard because a high is rather avoid that too.
If you already use Proton Mail, I strongly recommend against using ProtonVPN because you’re coupling yourself too hard to Proton. At least, if your threat model is high risk