Paying for upvotes of the post.
Only if it can be done in the Brofi way, if you stake the token then you might receive some votes. If it comes to PAYING up for votes(on Hive I mean), you'll have the marky swarm coming down to zero you.
Paying for an unscheduled email when you don't have a premium
This already exists, you can buy/send a Solo mail for the price of 20k MAIL, which you can buy with Listenrds. But if the parity is not right, nobody will touch it.
or
Hah, 7030 Listnerd would count for a Solo mail, and @amirtheawesome1 is talking here about 7k LN for enterprise which will give you 60 mail a month plus some. Some of this numbers are so off... 😠😔