Mautic Community Forums

Custom Headers in Emails


I’m trying to use the Custom Headers feature of emails (on the Advanced tab) like in the attached screenshot but when I check the header of a received email it’s not actually there. I’m using SendGrid API to send. Any ideas? Is this a bug?

Bob H.

Any comments about this? Is there any documentation about Custom Headers? Especially with SendGrid.

I am getting the same problem. I need to use the sandbox from sendgrid, to testing the performance on mautic.

I have tried to put the header: mail_settings: {sandbox_mode: {enable: true}}