spam spam spam spam! spam glorious spam!

Had to revive an old Yahoo! email account just to keep all the notifications and emails contained.  There is a whole arcana to their system, with winks and interests, but mostly I want to know how the hell can I just save them for later for myself, without letting them know I've done so?  Because I like to watch a guy from across the room for a bit in the real world, and guess what, on the internet we CAN tell you're a dog.