[FEATURE] Allow email send action to reply to trigger email

I have workflows triggered by emails to `...@pipedream.net`

It would be great if there were a way to **Reply** to that same email at the end of workflow with my results.

Currently when using `email_me` action – the sender of email is `notifications@pipedream.com` which causes the email to be 'de-threaded' (at least within Gmail) and so does not appear as a reply to the original triggering email, but rather as a new 'conversation' (even if Subject is the same.)

Thanks!

Referenced at https://pipedream.com/community/t/reply-to-email-trigger/1865/2