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Keychain has it as well. When it comes to subscriptions on Hive, that feature should be mentioned more.

oh nice. as long as it doesn't add a memo, it should work fine for premium

As far as I can tell, there's no memo requirement on either option I've found so far. People just need to ensure they have enough in the wallet before transfer time. No different than automated bill payments with a bank account.

Can you send funds from any frontend or wallet or must the transaction take place "here"? If it doesn't matter, that peakd option looks sharp and one can cancel it at any time.

nah just send 10hbd with no memo and it'll get picked up. always better to use the built in feature though, just in case.