[brihas]

I work for a small non-profit and we've had the same issue. We use SendGrid to send out our email newsletters and the open rates have fallen from ~27% to ~13% over the past month.

Does anyone here have contacts at Google who might be able to help? [Edit: I've also reached out to SendGrid support to look into this]

Looking at the data more, the drop is due to a ~73% drop in Gmail opens. Hotmail and Yahoo opens remain stable:

1) See drop in overall open rate here: https://www.dropbox.com/s/j8grg3r684zshhz/Drop%20in%20open%2...

2) See drop in Gmail open rate vs. Yahoo and Hotmail here: https://www.dropbox.com/s/0fdvbddwno27mgf/Drop%20in%20Gmail%...

[dhekimian]

Since you didn't provide your domain name, I can't troubleshoot for you.

I recommend reading my comment https://news.ycombinator.com/item?id=14720344 and following the troubleshooting steps I outlined.

[brihas]

We use the news.pariyatti.org domain for these emails. If you're willing to help troubleshoot, that would be much appreciated. Otherwise I'll try to work through your recommendations, although a lot of it is very new to me so I'm not sure how far I'll be able to get. You can reach me via email at my HN username @pariyatti.org if you wish to discuss further.