Does anyone know to send mail encrypted in GO?

Question

So I can send mail just fine, this copy pasta works quite well:
https://gist.github.com/chrisgillis/10888032

I'm even sending it through smtp with ssl -
smtpdm-ap-southeast-1.aliyun.com:465

the problem is that I get that classic "blahblahblah did not encrypt this message" in my Gmail.

  
Does anyone know how to solve this? How do I encrypt my email in golang to stop this message? Is this even a golang related problem? I think this is partly why my emails are being marked as spam instantly by Gmail. Thanks.

Aditya Agrawal · Accepted Answer

SMTP is a hop-by-hop mechanism which in your case includes at least two servers, aliyun and gmail. You are using TLS in the connection to aliyun. But gmail probably cares about the connection from aliyun to gmail which I guess isn't using TLS.

Prasad Patil · Answer

aliyun is not transiting to google over TLS.

Go Language

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