Thank you Nicolas.

Jean-Christophe 

> On Nov 10, 2018, at 16:28, Nicolas Goaziou <mail@nicolasgoaziou.fr> wrote:
> 
> Hello,
> 
> Jean-Christophe Helary <brandelune@gmail.com> writes:
> 
>> I'm pasting a message:// link into an org-mode file but it fails to be
>> recognized as a link that should open in a mail client.
>> 
>> What is a simple way to have org-mode recognize such links ?
> 
> One simple way is to define "message:" as an alias for "mailto:", which
> is the Org syntax for such links.  This is done with
> `org-link-abbrev-alist' variable, or in-buffer "LINK" keyword:
> 
>  (setq org-link-abbrev-alist '(("message" . "mailto")))
> 
> One drawback is that you cannot write plain links with abbreviations. So
> [[message:foo@bar.baz]] works, but message:@foo@bar.baz does not.
> 
> If that is an issue, you can also define a new link with
> `org-link-set-parameters':
> 
>    (org-link-set-parameters "message" 
>     :follow (lambda (path) (browse-url (concat "mailto:" path))))
> 
> HTH,
> 
> Regards,
> 
> -- 
> Nicolas Goaziou

Jean-Christophe Helary
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http://mac4translators.blogspot.com @brandelune