ProtonMail users

Username

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Queries ProtonMail's HKP-compatible PGP key server to look up the public key for a ProtonMail username. A successful response confirms the account exists.

#specific-sites#username

Website: api.protonmail.ch
Pricing: Free
API: Available
Last checked: 4 min ago

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Added Aug 16, 2026 · Last probe Aug 16, 2026 · Status is a reachability check, not an endorsement.