3

With information from here, you need the org-plus-contrib package that is available through the org-mode elpa. So to install it by your favorite way you have to add it to package-archives via (if you don't already have it): (add-to-list 'package-archives '("org" . "https://orgmode.org/elpa/") t) Then the org-plus-contrib package will ...


2

You almost have the answer. The only problem is that the value returned by org-contacts-filter has several parts that need to be unpacked before you get to the assoc list. A bit of experimenting gave me this, which seems to work: (cdr (assoc "ID" (nth 2 (car (org-contacts-filter "Example Contact"))))) The second line is ...


1

Finally, I did it myself, and I am posting it here to help people looking for a solution to my problem. I decided to use tags to specify a group of emails, thus the same contact can be part of several groups simply by tagging it several times. Here is an example of contacts file: * John Doe :MailingListA:GroupB: :PROPERTIES: :EMAIL: john.doe@example....


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