Mailbox provider
Proton Mail
Proton Mail is a mailbox provider. Type any domain below to see if its email runs through Proton Mail.
Provider profile
Proton Mail
Proton Mail is a mailbox provider. Its mail servers' hostnames end in .mail.protonmail.ch, .mailsec.protonmail.ch, .protonmail.ch, .protonmail.com, .proton.me.
What is a mailbox provider?
A mailbox provider runs the inboxes where people read and send mail. Domains that point their MX records here have their email hosted directly by this service.
MX hostname patterns
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.mail.protonmail.ch - ·
.mailsec.protonmail.ch - ·
.protonmail.ch - ·
.protonmail.com - ·
.proton.me
Other mailbox providers
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