Newsletter: How is it possible to determine how many people opened the e-mail?
问题 Exact duplicate of Is there a way to determine whether an e-mail reaches its destination? Hi all, I heard that it's possible to determine how many people opened a newsletter and analyze WHEN they opened the mail. I just wanted to know how that's possible... is it necessary to generate a "read confirmation" or is such an analysis possible without letting the recipient know? Thanks a lot for your input... 回答1: See also Is there a way to determine whether an e-mail reaches its destination?, my