Send email as reply to thread
问题 I am using sendgrid to send emails when users are offline and cannot chat in realtime Problem that right now, when I send an email, it is always creating a new 'thread' in the recipient's email. I want to have a conversation thread I am using the Send HTTP endpoint https://sendgrid.com/docs/API_Reference/Web_API/mail.html Any ideas? 回答1: Try the following: First, I assume you are tracking the conversation(s) somehow using a unique conversation id? If not, start doing this. You'll want to send