Translation:I would send you an email, if you would tell me what your email address is.
This is called "second conditional" and it simply is like that for no good reason: http://grammar.ccc.commnet.edu/grammar/conditional2.htm
English grammar is full of such weird tiny things.
You really need a browser that shows you the dates of the messages. Maybe someone will come along in the future with the same question about English word order in the Esperanto course, but for sure Eyalthegreat has moved on to other things since June 2016 -- and only level 10 in Esperanto in all that time.