The Thunderbird add-on enhances the compatibility of P7M attachments in email clients, offering a seamless experience for users.
While Thunderbird identifies attachments solely based on their content type (i.e., application/pkcs7-mime or application/x-pkcs7-mime), it theoretically should automatically verify signatures and display the attachment if the verification is successful. In case of a failure, the attachment remains hidden.
The Smart P7M Support for Thunderbird extension addresses this issue by enhancing the support for P7M attachments in Thunderbird, ensuring that they are properly displayed when verified, and hidden when not. The extension is therefore a valuable tool for those who regularly deal with P7M attachments and need a more reliable way of verifying their authenticity.
Version 0.4.1: N/A