What does not opened mean?

After distribution you can check how often your emails have been opened or not opened. Non-opens often are a result of one of the following:

  1. The recipients received the email and opened it, but the images were not loaded or the email client suppresses these images.
  2. The recipients received the email but didn’t open it.
  3. The email was delivered but immediately deleted by the recipient.
  4. The email was sent but not delivered due through internal filter rules of the receiving mailserver.

We generally recommend the following measures to optimize open rates and guarantee good delivery of your emails.