boster.com is part of the OwnEmail.com free webmail service. You can send and receive email from any device capable of operating a web browser, so you are not tied to a single device for your communication.
Login to your existing boster.com account here:
If you would like to register for a free [you]@ boster.com webmail account then please click here.
e-mail addresses - especially free ones - should never be used as the sole means of identifying a party to a transaction. Always ensure you have a reliable and verifiable means of determining who you are sending money or products to.