Using PayPal express with magento.

The story
I was asked to give the user the ability to pay using PayPal services.
The site is magento store.
The user will have two option at PayPal:

1. He have an acount and will pay after he logged into his PayPal account.
2. He have no account - he is NOT requiered to open a PayPal account to pay, he'll enter his credit credentiols and pay.

Simple, right? :-)

I got into some problems, the community help on this matter is not so obvious, after a day of research and experements, which hopefuly you will avoid,  here are the final steps did to satisfy these requierments:

The solution

On Magento Admin Panel

 

• Magento admin panel => Menu => System => Configuration, click.
• In the left configuration panel => Sales => PayPal, click.
• "Email Associated with PayPal Merchant Account" => enter your PayPal account email.
• "Select a PayPal Solution" => "Express Checkout", checked
• At "Express Checkout Settings" (*2):
• "Payment Action" : Usually Sale .
• "Enable PayPal Guest Checkout" => Yes
• SAVE CONIFG!
• At "API/Integration Settings":
• API Authentication Methods => API Signiture.
• Get Credentials from PayPal, click:
• Entering PayPay... Enter your PayPal credential...
• Just get your API credentials through Profile > My selling tools > API Access > Update > Request API credentials > Request API Signature (*1)
• Enter the API credentioal, appropriattly, to:
• API Username, Password & Signature.
• SAVE CONIFG!

These steps created a fast & secure checout point for my users to buy products without PayPay account.

Hope it helped.

Resources

• (*1) - http://stackoverflow.com/questions/7120058/customer-cannot-pay-by-card-without-sign-in-using-paypal-website-payments-standa
• (*2) - http://www.magentocommerce.com/knowledge-base/entry/setting-up-paypal-for-your-magento-store