What is it? We have separated the stamping and digital signature component in order to apply it to PDF emails. This makes possible to demonstrate to have sent an email, and the original state of the conversation. We hope you find it useful, and leave it free to use. If you want to use it massively don’t hesitate to contact us.
As always, all feedback is welcome.
Updated to August 28: Finally converted this test in a service. Now available at: http://mailstamper.com/