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Each MAIL token can send to 1 user and one good thing is that you can earn LISTNERDS on the platform by sending mail. So long as you get 20 upvotes (better now that certain changes happened). Right now I think they are worth 2 HIVE each but they come staked so you have to unstake them if you want to cash out. However I think it's better to leave them staked so it compounds over time.

Great, leaving them staked sounds like a good idea.

I used 800 MAIL tokens to promote my giveaway and I got some extra participants plus votes out of it. So even if you don't get verified, I wouldn't feel too bad.