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How to reply to an rsvp email
Think about whether you will go.
Your first step and decision will be to determine when you are going to the actual event. You should reflect on whether you'll go to the event as soon as you get the rsvp email.
Consider the location of the event and if you'll have to travel. For example, if someone invites you to an out-of-town wedding, you may need to buy airplane tickets to get there.