Sendinc lets you send encrypted messages using its own email client and third-party programs like Microsoft Outlook, Thunderbird and Gmail.

Send a message from Outlook email If you have Microsoft Outlook, you will be pleased to know it supports S/MIME encryption. Here’s how you can set it up: 1. Get a Digital Certificate: First, you ...

Outlook supports S/MIME certificates, which help send secure email messages. I have written this detailed guide to show you how to get S/MIME certificates on Outlook and send emails securely.

The entire message reads: Microsoft Outlook cannot sign or encrypt this message because there are no certificates which can be used to send from the email address [email-id].