Ref: HYC198850 On Coinbase, you can cancel a pending transaction if you send cryptocurrency to the registered EMAIL ADDRESS or PHONE NUMBER of the receiving party, instead of their cryptocurrency wallet address. In the cryptocurrency space, you should always go with the safest way possible when making a transaction because even small mistakes can become very costly and devastating. And in case you do make a mistake, you should know the necessary actions to revert from that mistake.
More details: Coinbase Cancel Pending Transaction
