Hi DocEman
with regards to the gmail email... check the emirates website for dates in cairo, normally it states underneath if emirates makes use of a company to do pre screening... if so try to get in contact with that company, i had to do it in SA coz I never got an invite from the online applications... that company might have a gmail account, but did they state the documents are regarding emirates recruitment...?
if no on both counts dismiss the email... you have every right to be cautious
I see now the make use of a company called reach in egypt...
so if you can confirm the gmail is their accont then you should submit by all means.