The feeling when that nondescript envelope arrives...

[masscredit]

I love when I receive an envelope that has no markings, is kind of thick and has a solid object on one side. Yup... new card excitement! 

[sznthescore]

Congratulations on receiving your nondescriptive envelope. 🥳

[wingennis]

I, too, love the feeling of this stealth mail.

[ptatohed]

Delaware.  "Home is where the card is".