When I ask people to pay me via PayPal, I send them this, in part:
¶ PayPal -- the email address of our PayPal account is (xxxx). . ... If you like, I can have PayPal email you a "Money Request" (invoice), which is easy to pay from. ... Your PayPal payment is protected by PayPal's Buyer Protection policy, and better yet, by me.
.......
¶ credit or debit card -- through PayPal, even if you don’t have a PayPal account!
Best wishes,

Robert Eisenstadt, 200 N River Ln, Apt. 204, Geneva, Illinois, 60134. Email address: chipe@ix.netcom.com.

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A good page to bookmark is this one. It lets someone create a PayPal shipping-postage label even if he has not received a payment/link to make that easier. That is, "out of the blue" one can log into PayPal and type yours and recipients mailing addresses, email addresses, type of mailing service, etc, -- to generate the shipping-postage label:"
https://www.paypal.com/shiplabel/create/

Robert