Your software
My Mautic version is: 4
My PHP version is: 7
My Database type and version is:
Your problem
My problem is: how I can manage custom headers of an email template through the API?
I use POST api/emails/new and add input headers in the json.
“Headers”: [
{
“My-custom-header”: “email code”
}
]
I received error code 400 headers: this form should not contain extra fields.