Can you clarify this sentence for me, please? Which of the following understandings is more accurate?

a). If there is already an account, there is a system (the account is already set up) by which you are able to send and receive email. - 'by which' implicitly refers to the account

b). If there is already an account, there is a system (you can login with that account) by which you are able to send and receive email. - 'by which' refers to a system.

My intuitive take is a). because nowadays we do not think of a system when trying to use an email account.

Your response will be appreciated.

Regards,

Hi Kalamunda,
author of the sentence isn't on Tatoeba several years. You can see that by clicking the authors name, and on that page, on the right side, click Logs, which displays his activity. First listed is his last action. You don't have to check for every direct contact you try, but if Logs beside sentence (now on this page) shows very old date, try to check. Especialy if you are expecting response (and not just leaving remark that could be taken into account any time afterwards).

I am not a native English speaker, but I strongly believe that it is actually meaning closer to your option b. Account provides functional system for specific user which in turn provides possibility to use the system. However, you might want to ask some native English speaker, or maybe better - JimBreen who is listed in the Logs for the sentence. Also you can see first version of the sentence - and how it is changed by him.

Thank you! Very helpful info.

I agree that the meaning of the sentence is equivalent to sentence b.

I realise the author of the English sentence is now inactive but I think English would normally usual plural in this sentence (because you would be sending and receiving more than one email):

"... send an receive emails."