Sily mail

You meant "silly mail"!

Silly mail is a fun and creative way to send mail that's not meant to be taken seriously. It's often used to add a playful touch to a letter or card, or to surprise someone with a humorous or whimsical message.

Some examples of silly mail might include:

Silly mail is a great way to add some humor and personality to your correspondence, and it can be a fun way to brighten someone's day.