When debugging or testing, it may be useful to examine the raw request body to compare against the documented format.
In the examples/example.php file, after you've added all custom header data, you can do the following two things:
- Run
var_dump($header);- Dump out theSmtpapi\Headerobject - Run
print $header->jsonString();to print out a stringified json formatted X-SMTPAPI header