text/calendar attachments hidden

User Help for Mozilla Thunderbird
Posts: 2
Joined: March 12th, 2005, 4:05 pm

Post Posted March 12th, 2005, 4:28 pm

I just installed Thunderbird and I've got most of the stuff I want working. The only problem is people who send calendar invitations.

I know that there is no steadfast calendar integration at this time but I would still like to be able to save the text/calendar attachments to file and then import into Calendar/Sunbird. The problem is that the message display shows no attachments. When I view the message source, I can see two MIME sections, text/plain and text/calendar but I just get the text in the display, no attachments. I tried adding some stuff to the mimeTypes.rdf file but it didn't seem to help.

Is mimTypes the correct path or is this just a current issue? I've looked at the code but I'm not that familiar with it.

Here is the relavant data from the message with cut portions noted:


<header stuff>

MIME-Version: 1.0
Content-Type: multipart/alternative;
Content-class: urn:content-classes:calendarmessage

<header stuff>

This is a multi-part message in MIME format.

Content-Type: text/plain;
Content-Transfer-Encoding: quoted-printable

<text here>

Content-class: urn:content-classes:calendarmessage
Content-Type: text/calendar;
Content-Transfer-Encoding: 8bit

<calendar stuff here>


Rod Whiteley

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Posts: 11480
Joined: December 6th, 2004, 3:41 am
Location: UK

Post Posted March 13th, 2005, 4:12 am

I know this is no help to you, but when I have an attached .ics file in an e-mail, Thunderbird displays it as an attached file in the normal way. I changed the headers to look like your example, but this did not break it.

I can save the file, then import it into my calendar.

If I try to open the file directly from the e-mail when the Calendar extension is not already open, it opens and then hangs. If Calendar is already open, it opens the file as a new calendar.

My mimeTypes.rdf does not mention calendar.

Posts: 2
Joined: March 12th, 2005, 4:05 pm

Post Posted March 18th, 2005, 3:41 pm

Well it turns out that its the multipart/alternative bit that is messing it up. It selects the text/plain as the section it wishes to display. If I change that to multipart/mixed I get all the text in the message display as well as the ability to open/saveAs the ics attachment as a file.

Now to figure out how to get Thunderbird to pick the text/calendar part over the text/plain part.

Posts: 1
Joined: January 28th, 2009, 1:12 pm

Post Posted January 28th, 2009, 1:18 pm

I had a similar problem.
I added a Content Type value in the windows xp registry to associate it with the text/calendar type and now everything works well.

I found the solution at:

Hope it helps.


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Posts: 122843
Joined: July 31st, 2005, 9:17 pm
Location: Where the Waters Meet, Wisconsin

Post Posted January 28th, 2009, 4:09 pm

Er, this topic was from 2005. I really doubt that the OP is watching it any more. Please look at the dates the next time you offer help. Locking this ancient topic.

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