The act says
Content of strata roll
Information about lots
The following information must be recorded in the strata roll in relation to a particular lot in the strata scheme— Section 178
(b) an address for service of notices,
(c) an Australian postal address, and an email address if the holder has one, if not provided as the address for service,
From the act its clear that email addresses form part of the strata roll .
If the OC is sending notices to the email address and he email address is not on the strata roll, then they breach 178(b) as the email address is not the address for service of notices.
Irrespective of the above statement, 178(c) says the email address must be recorded on the strata roll if the owner has one.
FYI: I spent 10 minutes cleaning up the leftover coding from copy and paste material in this post – never again! Go to the next page to see why Kaindub is right … but still wrong.