More people opening mails doesn't mean a higher conversion. Everyone sends out their press messages on Wednesday (or 1 day earlier or later). People are overwhe

More people opening mails doesn't mean a higher conversion. Everyone sends out their press messages on Wednesday (or 1 day earlier or later). People are overwhelmed with e-mails and other types of contents on these days so they will just quickly scan through it whereas in the weekends people have a lot more time to actually read the stuff, try it out, etc.