Proton Mail (Bridge) SMTP Settings (Server, Port & Setup)

To send through Proton Mail (Bridge), use these SMTP settings.

Proton Mail (Bridge) SMTP settings

• Server: 127.0.0.1 via Proton Mail Bridge
• Port: the port Bridge assigns
• Auth: the Bridge-generated credentials

Deliverability still matters

Correct SMTP settings get mail accepted, but SPF, DKIM, DMARC and a clean sending reputation decide whether it lands in the inbox.

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