Mail Tab From field

I’m wondering why in the mail tab form field it has to have your own email address in there. I just moved hosts and prior I was able to have [your-name] <[your-email]> fields in the from section and it worked fine. The form mail i received i could just click reply because this is who it was from. Now with the new hosting company it won’t work. I had to change this section to have my email address again so all forms i receive in email is to me and from me. I don’t get this.