Sometimes we need to forward some email as an attachment. For example, when you send an email to someone and he claims that he does not receive it, and to prove that you did send one, you can forward the email as an attachment to him.
On MeSince Android or MeSince iOS, when you press the button of Forward (see the image below), a menu with four options appears, namely, “Reply”, “Reply All”, ”Forward”, ”Forward it as an attachment” and ”Cancel”. You can hit the “Forward it as an attachment” to forward an email completely as an attachment.
On MeSince Windows, there is a slight difference. Simply hit on the button, “Save as” and save the email somewhere, and then you can forward it as an attachment.
Note: If you forward an encrypted email as an attachment, only the original recipient of email being attached can decipher and read it. In the scenario mentioned above, only the one you have sent the original email to can decipher it. That proves the fact that you have sent the email to him.