I am sending emails with the Meteor email package.
It is getting flagged as spam.
mail-tester.com gave me a few reasons for it they included:
Message only has text/html MIME parts. You should also include a text version of your message (text/plain)
Missing Date: header
I split my message into a text part and a html part but I’m still getting the message.
Also I’m not getting the format of the header right. Meteor Docs doesn’t show it in their example. I googled and googles but no solutions came up.