CiviCRM Community Forums (archive)

We would like to add a custom mail header to all outbound e-mails (X-xsMailingId) so that we can track jobs with our 3rd party MTA.  I know this will be a core modification most likely.  But does anyone know in which file we can make this change?

This seems to be tied mostly to a form action though.  We're looking to do the headers on CiviMail outbound campaigns.  We probably wouldn't be able to call the hook without modifying the core anyways.

Thanks Lobo,

It looks like I only had to adjust: CRM/Mailing/BAO/Mailing.php

Right after $headers['Precedence'] = 'bulk';

I added the line:

$headers['X-xsMailingId'] = 'ClientName-'.$job_id;

The headers merged properly in the e-mails and we're geting the tracking we need.

One question I do have is instead of using $job_id is there any way we can access and merge $mailing_id instead?

Thanks,
-matt

That is a good thought to include all of the IDs.

How can we do a lookup of the #mailing_id?  Is there an API call we can make to retrieve that?  I didn't see anything in the public APIs that would reference that table.