Content-Type is set as text/plain, not html, when using Freemarker #55
Description
I create an Email via DefaultEmail.builder() and send it via emailService.send with a Freemarker template (without attachments).
The problem is that the Content-Type is set to text/plain, not html:
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="----=_Part_1_600820203.1498641103737"
------=_Part_1_600820203.1498641103737
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
<!doctype html>
<html>
<body>
I can also see that the MimeMessage returned from emailService.send has only one part with objectMimeType set to text/plain; charset=UTF-8.
I tried to set customHeaders but it does not help.