支付宝花呗收款是在商家服务内开通的，开通后可以可以接受付款方的花呗付款，但是花呗收款需要收取手续费。具体的开通方法如下：
1、打开支付宝点击更多
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2、进入到我的应用中，点击更多。
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4、进入最近使用列表，找到商家服务。
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5、在商家服务内，找到花呗收款。
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6、点击后，进入花呗收钱，同意协议并开通。
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注意事项：
1、开通花呗收款，首先要开通商家服务功能。
2、花呗收款是有手续费的，请根据自己需求考虑是否开通。