I work with several clients that between them send roughly 1 million emails per day, every day, and we are small compared to others I know. They fully understand that there are people like most people here that hate email marketing of any kind. But the response rate to those emails is significant. On an average day they get a 15% open rate. Click rates and purchase rates step down at each stage depending on the purpo…
How do you know whether users have opened an email or not? Or do you mean interacted with the email (i.e. clicked a link)?
[1] https://help.mixpanel.com/hc/en-us/articles/115004690106-How...