I have a server sending 1/2 a millon emails a day.
Where I am failing is my open rate.
I think all my mail is being blocked or to the spam folder.
I need advise as to what to change.
My ideas are that I should sent less mail each hour.
rotate my subject lines more.
I do have 64 ips.
Anyone have ideas as to what I should try next?
Right now my open rate is 0.03
What ideas do you have for my situation?