Electronically signed emails containing tax documents

Emails containing tax documents (invoices) issued by company INTERNET CZ, a.s. are signed with verified electronic signature. Your tax document will be issued as soon as we have received your payment on our bank account and it has been processed by our invoicing system. The tax documents are sent from the email address is@forpsi.com. Add the email address is@forpsi.com to your safe sender´s list, please. This step will ensure that the email containing your tax document will not be designated as spam.

The certificate for signing invoices is issued by company První certifikační autorita, a.s. I.CA.

The process of verifying electronic signature works without any problems in email clients such as Outlook or Thunderbird. On the other hand, an application such as webmail might not contain mechanism for verification of digital signatures, so it will only display information about attached file smime.p7s.