There are many wallet that support sending to multiple addresses in one single transaction. In fact, there is even a Bitcoin Core 

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MastercardMaximalist

There are many wallet that support sending to multiple addresses in one single transaction. In fact, there is even a Bitcoin Core [RPC](https://developer.bitcoin.org/reference/rpc/sendmany.html) for that. I know [Sparrow](https://sparrowwallet.com/) and [BlueWallet](https://bluewallet.io/docs/batching/) support it, to name only a few.