what's difference between this 2 paypal systems\
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I have paid properly but I m getting error.\
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Paypal Payment Check \
No payments has been received yet by our system from Paypal. Please make sure your Paypal email address is correct. if you have made a payment using Paypal and you are sure that your information is correct, please wait a momets and try agin to check your Paypal payments, there may be delay which could vary due to the nature of using the mail servers and the internet. If you still have problem seeing a payment you have make please contact us and we will be happy to check it and deposit it to your account. Thank you \
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Please explain.
Use the IPN method, the other email method is discontinued and will be removed from the software, it was the only method before paypal invent their IPN which is automated.