What url address can you find the email service @pro.com? ?

someone went and told me that they have an email at _@pro.com and i need to find the website where i can log in to this... does anyone know what address to type in the address bar? thanks and get back to me!

What url address can you find the email service @pro.com? ?
www.mail.com
Reply:www.hotmail.com


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