I'd like to be able to switch all my invoicing over to Square, but I can't see a place to change payment method if customer decides to pay with a check.
Actually, I figured out how to do this at POS, but now I am wondering if I can e-mail invoices for advance booking fees.
Yes, you can email invoices. Here's how to do it: https://squareup.com/help/us/en/article/5137-send-invoices-online-with-square
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