I think code like this would also work:

#+BEGIN_SRC emacs-lisp
(let* ((url "
https://mail.google.com/mail?view=cm&fs=1&to=duncanxyz@indeedemail.com")
       (struct (url-generic-parse-url url))
       (filename (url-filename struct)))

  (cadr (assoc "to" (url-parse-query-string filename))))
#+END_SRC


John

-----------------------------------
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu



On Mon, Nov 30, 2020 at 7:51 AM Ian Garmaise <ian.g@phorixsol.com> wrote:

> Thanks Kyle, got it to work this way:
>
> #+BEGIN: propview :cols ((car (s-split " " ITEM))  (s-chop-prefix "gmail:"
> (my/extract-email-from-link EMAIL_ADDRESS)))  :id "candidates" :match
> "testthis" :wrap example
> | (car (s-split " " ITEM)) | (s-chop-prefix "gmail:"
> (my/extract-email-from-link EMAIL_ADDRESS)) |
>
> |--------------------------+---------------------------------------------------------------------|
> | "Ciara"                  | "ciaraxxxx@gmail.com"
>                        |
> | "Duncan"                 | "duncanxxxx@indeedemail.com"
>                  |
>
> Thanks a million!
>
> Ian
>
>
> On Sun, Nov 29, 2020 at 10:39 PM Kyle Meyer <kyle@kyleam.com> wrote:
>
>> Ian Garmaise writes:
>>
>> > This is working well, except for the property used for the email
>> address.
>> > Unfortunately, I stored this as a gmail link.  This makes it difficult
>> to
>> > extract the actual email address using org-collector as follows:
>> >
>> > #+BEGIN: propview :cols ((car (s-split " " ITEM))  EMAIL_ADDRESS)  :id
>> > "candidates" :match "testthis" :wrap example
>> >
>> > the result produced looks like this:
>> >
>> > | (car (s-split " " ITEM)) | EMAIL_ADDRESS
>>                                      |
>> >
>> |--------------------------+---------------------------------------------------------------------------------|
>> > | "Ciara"                  | [[
>> https://mail.google.com/mail/?view=cm&fs=1&to=ciaraxyz@gmail\.com]]
>>        |
>> > | "Duncan"                 | [[
>> https://mail.google.com/mail/?view=cm&fs=1&to=duncanxyz@indeedemail\.com]]
>> |
>> >
>> > I have looked at several methods that I found on the web to extract the
>> > email address from the link in the property, but haven't yet found a
>> > solution that I could get to work.  Still building up my elisp skillset,
>> > would appreciate suggestions.
>>
>> I've never used org-collector, but quickly trying to wire up a function
>> to extract the email part of the text you show, I suspect some of the
>> trouble you're having is that the value comes in as a vector because
>> org-propview-collect processes it with org-babel-read.  So perhaps
>> something like this would get you on the right track:
>>
>>   (require 'subr-x)
>>
>>   (defun my/extract-email-from-link (value)
>>     (setq value (format "%S" value))
>>     (when-let ((link (and (string-match org-link-bracket-re value)
>>                           (org-link-unescape
>>                            (match-string-no-properties 1 value)))))
>>       (thread-last
>>           link
>>         (replace-regexp-in-string
>>          (rx string-start (one-or-more not-newline) "to="
>>              (group (one-or-more not-newline)) string-end)
>>          "\\1")
>>         (replace-regexp-in-string (rx "\\.") "."))))
>>
>>
>> --8<---------------cut here---------------start------------->8---
>> #+BEGIN: propview :cols ((car (s-split " " ITEM))
>> (my/extract-email-from-link EMAIL_ADDRESS)) :id global
>> | (car (s-split " " ITEM)) | (my/extract-email-from-link EMAIL_ADDRESS) |
>> |--------------------------+--------------------------------------------|
>> | "Ciara"                  | "ciaraxyz@gmail.com"                       |
>> | "Duncan"                 | "duncanxyz@indeedemail.com"                |
>> |--------------------------+--------------------------------------------|
>> |                          |                                            |
>> #+END:
>>
>> * Ciara
>> :PROPERTIES:
>> :EMAIL_ADDRESS: [[
>> https://mail.google.com/mail/?view=cm&fs=1&to=ciaraxyz@gmail\.com]]
>> :END:
>>
>> * Duncan
>> :PROPERTIES:
>> :EMAIL_ADDRESS: [[
>> https://mail.google.com/mail/?view=cm&fs=1&to=duncanxyz@indeedemail\.com
>> ]]
>> :END:
>> --8<---------------cut here---------------end--------------->8---
>>
>
>
> --
> =====
> Ian Garmaise
> Consultant
> Phorix Solutions Group
> ian.g@phorixsol.com
> Toronto cell: 416.432.2251
> NYC: 917.512.9535
>
> https://www.linkedin.com/in/igarmaise/
>
> http://www.PhorixSol.com
>