We have sent out a large email message to our constituents. The delivery rate shows 99%, however, the open rate for a specific domain is extremely low compared to the amount of emails delivered to that domain. Why is it so low?
The emails are being sent, but probably landing in the recipients Spam folder. For the latest and most accurate information on this topic, please visit our email resource center.
When it comes to a content-based, mailbox placement predicament, we do not have any authority nor remediation for such events especially when it relates to Gmail. The best way to avoid emails being sent to the spam folder is to use Engagement Factors to target constituents who are more active and adhere to our content best practices.