Most sites I sign up using an email that I could, but don’t send email from. I assign per-site emails which all forward to another mailbox that I regularly send mail from.
I could change my client temporarily to send from one of those custom addresses, but I’d have to be quite a bit more interested than usual in your service to bother.
Even users who just have multiple emails in their client would end up sending mail from the default account, which may not match. I have a work account, my personal gmail, my personal domain mail, a family email account, and a side project email account on my phone.
Even if users just have work and personal, how many users are you willing to lose because they sent a mail from the wrong account?
I also think most of the value to the site owner is being able to hit the user with a site->user communication (often an ad or offer of some sort) and me proving I can send you mail from that address is, at a minimum, putting the emphasis on the wrong syllable, and in a lot of cases is telling you nothing about my ability to receive email at that address.
I could change my client temporarily to send from one of those custom addresses, but I’d have to be quite a bit more interested than usual in your service to bother.
Even users who just have multiple emails in their client would end up sending mail from the default account, which may not match. I have a work account, my personal gmail, my personal domain mail, a family email account, and a side project email account on my phone.
Even if users just have work and personal, how many users are you willing to lose because they sent a mail from the wrong account?
I also think most of the value to the site owner is being able to hit the user with a site->user communication (often an ad or offer of some sort) and me proving I can send you mail from that address is, at a minimum, putting the emphasis on the wrong syllable, and in a lot of cases is telling you nothing about my ability to receive email at that address.