E-mail cannot be considered a confidential mode of communication.e-mail should not be considered a replacement for direct, face-to-face contact with a provider.
Where possible don't use email for first contactApply a "Rule of Three" - For more than three email exchanges, it's better to callAvoid sarcasm and colloquialisms
Be careful using humour - it is often misunderstood.mark it as best..................
if you want more tell me.............
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1.) Emails may carry viruses.these are small programs that harm your comp. system.

2.)Emails cannot really be used for official business documents. They may be lost and you cannot sign them.

3.) Many peoples send unwanted emails to others. These are called Spam mails. It takes a lot of time to filter out the unwanted emails from those that are really important.

other points are same as my friend told u earlier........

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bro...mark as best if u got the answer...