How do I find details of an e-mail address created when Yola was Synthasite?

Hi,
I bought a domain name from you (www.woodbridgelanguageservices.com) when you were still trading as Synthasite. I also added an e-mail address to go with it. I have recently got myself a Blackberry and was wanting to configure the handset to be able to read my e-mails from it, but I have forgotten what the password would be for the e-mail address. How can I find that out please?
Thanks,
Richard.