We have been sending marketing emails from Hubspot. Up until end of March our average open rates for any of the marketing emails would be around 25-30%. We sent a couple of emails last week and this week and have seen drastically low open rates for all the emails between 3-5% The has been no change in the lists we are sending to, delivery rates as per hubspot metrics are above 98.5% and bounce rate is under 0.5%. No spam reports. The dns and domain settings are also valid. Everything seems to be in place but still can’t figure out what could have gone wrong here all of a sudden. Any thoughts or suggestions what could be wrong here? Any immediate fixes to run the rest of the marketing emails?

Yeah man same. We too started seeing a significant drop in open rates in Jan 🤔 Our deliverability score had dropped big time and our DNS records were all over the place. I doubt it was something to do with Hubspot but not ruling it out.

They asked us to authenticate our email domain again and post that no issues.

My 2 cents, you can check on: • Spam triggers, With the new ESP compliance and policies, these have become stricter, https://www.activecampaign.com/blog/spam-words • Batch size, it would be good to test small batch size in multiple lots and time slots, you can also try spintax: https://helpcenter.smartlead.ai/en/articles/31-how-do-i-use-spintax-in-smartlead • Domain, IP and Audit checks: https://mxtoolbox.com/blacklists.aspx & https://senderscore.org/