Adding signature in message, not as attachment
I am wondering if it's possible to configure GPGMail to put the digital signature in the message itself rather than in an attachment. For some reason the thought of every email I send having this as an attachment doesn't sit well with me.
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Support Staff 1 Posted by Steve on 24 Jun, 2015 01:07 PM
GPGMail defaults to the only standard there is for sending OpenPGP Mails, which is PGP/MIME. The format you are referring to, is called PGP/Inline and is an undocumented non-standard format, which leads to several problems, which is why we default to PGP/MIME.
Nevertheless you can switch GPGMail to use OpenPGP/Inline. While this is not encouraged, we've added that option. Find out how to do that in this KB-article.
There's no difference in security level, yet you have to be aware, that while PGP/MIME also encrypts all attachments, OpenPGP/Inline does not!
Also, you're limited to text only. Any formatting will be ignored.
If you want to read more about the deficites of Inline/PGP you may want to read this note of Daniel Kahn Gillmore called Inline PGP signatures considered harmful. This is the GnuPG FAQ entry covering this question.
All the best,
Support Staff 2 Posted by Steve on 05 Nov, 2015 10:35 PM
Closing, since no further user feedback was received. Should your problem persist, feel free to re-open this discussion any time.
All the best, steve
Steve closed this discussion on 05 Nov, 2015 10:35 PM.