No, your Digital Check's recipients don't need to sign up for a Checkbook account to receive their funds. 

First-time recipients have to choose their preferred deposit method

If the recipient chooses the 'Deposit Check Online' option, they need to verify their Bank Account details and all future Digital Checks sent to them will be automatically deposited to that account (unless they cancel auto-deposit).

Additionally we never charge recipients any fees for depositing their Digital Checks. 

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