Hacker News new | ask | show | jobs
by stewfortier 2309 days ago
It seems like you're doing many things right.

One over-looked trick: "warm up" the inbox you send from.

I.e. start sending mail at ever-increasing volumes until you've reached the max capacity you need to send at.

If you Google "Sendgrid Warm Up Schedule", there should be a PDF with a send schedule you can copy.