E-mail certificates

PostFinance signs all its outgoing e-mails with a digital signature. As a recipient, you can use this signature to check that the e-mail has genuinely been sent by PostFinance and that the message text has not been altered.

Security with signed e-mails

A digital signature serves the same purpose as a signature. It confirms that the signed e-mail has been sent by PostFinance and that it has not been altered at all after being sent.

PostFinance only sends digitally signed e-mails. Most e-mail clients (Outlook, Thunderbird, Windows Mail, Mail.app) support digital signatures and represent them showing a seal, a sealed envelope or a tick. You can obtain further information about the signature by clicking on the relevant symbol.

Check security

If you receive an e-mail that is allegedly from PostFinance, you should check its signature. PostFinance only sends digitally signed e-mails. If you have received an unsigned e-mail claiming to be from PostFinance, please contact our Online Contact Center:

Tel.: 0848 880 044
International: +41 848 880 044