People get confused when they see the smime.p7s files (email s/mime signatures)

nate's Avatar


20 Jun, 2009 02:54 PM

What do you guys think about not storing, or at least not displaying the s/mime signature that can get attached to a discussion.

I automatically sign all my email. So my discussions look like:

And we've had users ask, what's the "smime.p7s" file, and how do I open it? For the web interface, this just causes confusion.

Tgethr ( is something we created to do simple group collaboration over email. It's very similar in some ways to Tender here in that it's very "emaily". We use it a lot to do private discussions over our Tender support requests, and we talk about our use of Tender a lot when we talk about reasons why we made tgethr (

And when we save attachments, we drop any attachments that are signatures

attachments.reject{|a| a.content_type.index("signature")}

Kind of thing. We use the sigs to verify mail coming in though, we just don't keep the sig around.

  1. 1 Posted by rick on 21 Jun, 2009 09:49 PM

    rick's Avatar

    Weird, what content type do they come in as? I receive them as text/plain attachments. At any rate, I'm hiding any *.p7s assets now, as soon as I deploy tonight.

    I saw Tgether on Friday and thought it looked pretty interesting. I've wanted to get smime support into Tender for awhile, but we're all gmail/safari users.

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