To respond to an RSVP by email, reply before the deadline, state clearly whether you will or won't attend, confirm how many people are coming using names if relevant, and answer anything the host asked, such as meal choice or dietary needs. Add a short, warm line about the event. Below are the essentials and five RSVP response examples for accepting, declining, adding a guest, giving a tentative answer, and replying to a work event.
What RSVP means and why it matters
RSVP stands for the French phrase répondez s'il vous plaît, "please reply." When an invitation includes it, the host is asking for a clear answer by a set date. They use those answers to book space, order food, arrange seating, and sometimes decide whether to invite more people.
"Regrets only" is a variation: you reply only if you can't attend. If an invitation says that and you're going, no reply is needed, though a short thank-you is still welcome.
What to include in an RSVP reply
A clear yes or no
Put it in the first sentence. "We'd be delighted to attend" or "I'm sorry, I won't be able to come." The host may be reading dozens of replies and tallying them.
The number and names of attendees
If the invitation is for you and a partner or family, say who's coming: "Both Leo and I will be there." This prevents seating mix-ups.
Answers to the host's questions
Meal choice, dietary restrictions, accessibility needs, which sessions you'll attend. Answer all of them in the same email so the host doesn't need to follow up.
A warm closing line
Something about the event or the host: "We're looking forward to celebrating with you." For a decline, a good wish takes its place.
The right subject line
Reply in the original thread if there is one. If you're writing fresh, use a clear subject: "RSVP: [Your Name], [Event]."
Five RSVP response examples
Subject: RSVP: [Your Name], [Event] on [date]
Dear [Host's name],
Thank you for the kind invitation to [Event] on [date] at [venue]. [Partner's name] and I would be delighted to attend.
For the dinner, we'd both like the [meal option]. [Partner's name] is allergic to tree nuts, in case that's helpful for the kitchen.
We're looking forward to the evening.
Warm regards,
[Your Name]
Subject: RSVP: [Your Name], regrets
Dear [Host's name],
Thank you so much for inviting me to [Event]. Unfortunately, I won't be able to attend, as I'll be out of town that weekend.
I'm sorry to miss it and hope you have a wonderful celebration. I'd love to hear all about it afterward.
Best wishes,
[Your Name]
Subject: RSVP for [Event]
Hi [Host's name],
Thanks for the invitation. I'll definitely be there on [date].
I wanted to ask, would it be all right if I brought a guest? My partner, [Name], is in town that week. If you're keeping numbers tight, I completely understand and will come on my own.
Can't wait,
[Your Name]
Subject: Re: [Event] invitation
Hi [Host's name],
Thank you for the invitation. I'd really like to come, but I'm waiting to hear whether I need to travel for work that week.
I'll know by [date], which is before your RSVP deadline, and I'll confirm either way as soon as I hear. If you need a firm number sooner, please count me as a no for now so you're not left guessing.
Thanks for understanding,
[Your Name]
Subject: RSVP: [Your Name], [Event]
Hi [Organizer's name],
Thanks for organizing [Event]. I'll be attending on [date] and plan to join both the afternoon session and the dinner.
I'm vegetarian, so I'd appreciate a vegetarian meal if one is available.
See you there,
[Your Name]
[Department]
Etiquette details people often get wrong
Replying late
The RSVP date isn't a suggestion. Hosts often have to give final numbers to a caterer or venue right after it. If you miss it, reply anyway, apologize in one line, and ask rather than assume: "I'm sorry for the late reply. Is there still space for me?"
Changing your answer
If you accepted and now can't go, tell the host immediately. Don't just not show up. For events with per-person costs, like a wedding dinner, apologize clearly and consider whether to offer to cover your place.
If you declined and your plans open up, ask before arriving: "My trip was canceled. If there's still room, I'd love to come, but no worries if numbers are set."
Adding people
Don't add children, partners or friends who weren't named on the invitation. If you're unsure whether they're included, ask politely, as in example 3, and accept the answer.
Replying to everyone
Some email invitations go to a long list. Reply only to the host unless they ask otherwise.
Phrases for RSVP replies
To accept:
- I'd be delighted to attend.
- We'll both be there and are looking forward to it.
- Count me in. Thanks for the invite!
To decline:
- I'm sorry I won't be able to attend.
- Unfortunately, I have a prior commitment that evening.
- I'll have to send my regrets, but I hope it's a wonderful day.
To hold:
- I'll confirm by [date], before your deadline.
- If you need numbers sooner, please count me out for now.
Formal vs. casual RSVPs
A formal printed invitation (a wedding, gala or milestone anniversary) calls for a more polished reply, often with "Dear" and full names. If a reply card is enclosed, return the card. Email is fine for the parts of the event handled by email, such as online RSVPs.
A casual invitation from a friend or a team lead can get a two-line reply. Match the tone of the invitation itself: if it was a quick message with an emoji, a quick, friendly reply is right.
Key takeaways
- Reply by the deadline, even if the answer is no.
- Make the yes or no clear in the first line and name everyone attending.
- Answer every question the host asked, from meals to allergies.
- Ask before bringing extra guests, and tell the host right away if plans change.