We aren’t married or living together yet, but my SO has given me carte blanche to open his mail. When I take over the finances, I’ll open the bills, but anything personal will go untouched. It’s the same for his e-mail. We have each other’s passwords, but I wouldn’t dream of reading anything he receives.
@TheOnlyNeffie For me, it is because I know he’ll share any pertinent information with me. Also, I find it fun to open something personal…the actual tearing of the envelope to find the hidden treasure inside.