1. It seems attachment takes 80% of the size of emails. More the attachments, more the space required by corporates to archive and more time to recover in case of a failure.
2. Coporates are accountable / legally liable for damages if the email orginated from thier domain. Ultimately you!! Beware of sharing any sensitive data or sexually explicit data
3. Emails nowadays spends max number of virus.
4. Never click any link in email from unknown source it could be a phising email cappturing your password and ultimately wiping off your bank balance.
There are many more risks..read about them in internet.
