Netiquette - Reply All vs Reply

Do not overuse the "Reply All" option. Just because a sender may have copied a number of people on an email to you doesn't mean you need to reply to everybody. Use discretion. Ask yourself if there is truly any benefit to be derived by multiple recipients receiving your response. If not, click Reply instead of Reply to All and respond to the sender only.

[There are countless "Netiquette" rules sites - if you want to see more of them, just Google "Netiquette Rules"!]