Sort:  

They'll receive it but their automatic system will probably not assign it to you due to a wrong memo.

That's what I think too. But it would be really cool :)

They dont have encryption reading set up so you will have to go through support - not a fun process!

But withdrawing from exchange that allows memo should allow you to send encrypted memo anonymously 🤔

no memo also anon by withdrawal :P

anon send yes, but no memo is not a very interesting message 😅

depends. Can include 69 in sending amount.

Means more than 1000 words to me.