PURPOSE Responding to invitations helps organizers plan accurately. RESPONSES Accept if you will attend, decline if you cannot, or mark tentative if attendance is uncertain. ADD CONTEXT When declining an important meeting, include a brief note or suggest an alternate attendee if appropriate. CHECK DETAILS Review time zone, location, agenda, attachments, and whether preparation is required. BEST PRACTICE Do not leave important invitations unanswered. Silence makes scheduling harder for everyone.