Your email's subject line is, next to your name, the first thing the recipient sees. It is important.

In your email subject, do not:

• Arouse interest and curiosity.
• Say "Hi".
• Be wordy.
• Respond without giving context.
• Be vague or general.

To compose the perfect email subject:

• Give the message's bottom line
  • If your email comprises multiple topics, consider breaking it into multiple messages.
• Summarize the message — why you are writing and what you want to be different after the recipient has read your email — instead of describing it.
  • If you invite somebody to a conference, use "Invitation: Email Efficiency Conference, Bangalore Aug 14-16" instead of a plain "Email Efficiency Conference".
• Be precise.
  • Include detail that allows the recipient to identify what you are talking about quickly and unambiguously.
• If your message requires the recipient's action, say so; preferably with the first word.
• Leave out unnecessary words.
  • Email subjects need to be concise. Skip articles, adjectives and adverbs.