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Which is the best PSP (payment service provider) - for taking card payments on the internet?

Am I about to be scammed through Paypal? Help plz!? Hello everyone I have had a paypal account for a while now and have never sold anything, I have only bought with it and that was easy enough. Now I am currently in the process of selling my PSP system through paypal, in order for me to receive payment I have to verify the tracking number of the package I am sending out, it says to send the tracking number to: paymentconfirmed@mail2consultant.com , and I don't know if this is a scam or not! It looks legit but I don't know here is more of the message: Dear Customer (----------) This e-mail is sent to you as a confirmation of payment made to your PayPal account by PayPal Member (---------), We have examined the payment for your item and the amount to be credited to your account which is $150.00USD This transaction is in order and legal.This fund will be credited to your paypal account once the shipment tracking number is sent to our verifying team at: paymentconfirmed@mail2consultant.com We encourage you to ship the item immediately (due to Paypal's policy) as your payment has been confirmed by us.Security is of critical importance to us at PayPal. We use proprietary technology and constantly innovate to help ensure your transactions are safe. In addition, PayPal has over 20,000 staffs worldwide dedicated to keeping PayPal accounts safe, and stopping online criminals. And we work with Internet Service Providers (ISPs) worldwide to shut off fraudulent websites as soon as possible. PayPal 's Fraud Investigation Team is highly experienced in fraud prevention. Several members of the team were former law enforcement officials with extensive experience in fighting online fraud. PayPal's fraud investigation team focuses on: Identifying and preventing fraud before it occurs, Detecting fraud in process Mitigating loss, if fraud does occur, Delivering information to law enforcement around the world to help stop those committing online fraud. I also got this mail from paypal: You've got new funds! Dear Customer (-----------@yahoo.com) ------------@gmail.com Has sent you an instant payment using PayPal. ----------- is a Verified buyer . Payment Details : Amount: $150.00 USD Postage & Packing: INCLUDED Transaction ID: ****************** Item Description: PSP Shipping Option: (Usps Express Mail International (EMS)