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Use cases · For wedding and event planners

From the invitation to the first anniversary

Invitations that open on every guest's phone with the RSVP inside, a thank-you to your couple the week after, and a letter on their first anniversary. Your name on every one of them.

Try 3 letters free Open a sample letter

No app for your clients. No card details to start.

What your clients see

Real screens from the product, not mock-ups.

It arrives as an envelope with your name on it, and tears open on their phone.
It arrives as an envelope with your name on it, and tears open on their phone.
Inside, a letter in the handwriting you picked, written to them by name.
Inside, a letter in the handwriting you picked, written to them by name.
A photo from the day and your voice note, right in the letter. No app needed.
A photo from the day and your voice note, right in the letter. No app needed.
Invitations carry the RSVP inside. Guests answer with one tap.
Invitations carry the RSVP inside. Guests answer with one tap.

You planned the best day of their life. A year later they cannot remember your name.

The photos get shared, the venue gets tagged, and the planner who made it all happen is forgotten. A thank-you the week after and a letter on their first anniversary keep you in the story, and in the answer when a friend asks who planned it.

Where a letter fits

The invitationEvery guest gets their own letter with the RSVP inside, answered with one tap.
The week afterA thank-you to the couple or client while the glow is still there.
The first anniversaryWritten today, delivered on the day a year from now.
After a referralA thank-you to the client who sent a friend your way.
Before the holidaysEvery past client from one spreadsheet, each letter personal.
Corporate eventsA thank-you to every attendee the morning after.

How it works

1

Upload your list

Names, emails, dates and one personal line each, straight from your guest list or client list or a spreadsheet.

2

Write it once, make it theirs

Pick the handwriting, envelope and music. Each person's name and line go in on their own.

3

It goes out on the right day

Invitations now, thank-yous the week after, anniversaries a year ahead, all at 6 am in each person's time zone.

Your client list in, one personal letter per row out, each on its own date.
Your client list in, one personal letter per row out, each on its own date.
Or print each letter as a QR code to hand over in person.
Or print each letter as a QR code to hand over in person.
Pick the animation that plays as it opens.
Pick the animation that plays as it opens.
And the envelope they see first.
And the envelope they see first.

Free templates you can copy

Use them as they are, change a line, or paste one into a letter and send it today.

Wedding planner thank-you note to client

Thank you for trusting me with your wedding. Watching you two on the dance floor under all those lights was the best part of my year. I hope the photos bring it all back, and I will be thinking of you on your first anniversary.

Send it as a letter

Event planner thank-you letter to a corporate client

Thank you for choosing us for your conference. It was a pleasure working with your team, and the feedback from your guests has been wonderful. We would love to help with the next one.

Send it as a letter

First anniversary letter to a couple

Happy first anniversary! A year ago today you said yes in front of everyone you love. I hope married life is treating you beautifully, and that you are celebrating somewhere lovely tonight.

Send it as a letter

Invitation wording with RSVP

We would love for you to celebrate with us. There will be string lights, good food and a lot of dancing. Please let us know if you can join us by answering below.

Send it as a letter

Thank-you for a referral

Thank you for recommending me to your friends. I am so grateful that you thought of me, and I will give them the same care I gave you.

Send it as a letter

Holiday letter to past clients

Happy holidays! Thank you for letting me be part of your celebrations this year. Every event was a joy to plan. I wish you a warm and wonderful season.

Send it as a letter

Printed cards versus letters

A printed card, an envelope and a $0.82 first-class stamp add up fast. Move the slider.

Printed card estimated at $2.50 plus a $0.82 stamp (USPS, July 2026). Business is $39 a month for up to 500 letters.

Printed and mailed$0a year
GreetSpark Business$0a year

Pick how you run it

Business
$39 a month

For a planner sending invitations, thank-yous and anniversary letters to a few hundred people a month.

  • 500 letters a month, and 500 more for $50 when a month needs it
  • Sent from your own email address
  • Your name on the letter, its page and the email, with ours nowhere on them
  • A spreadsheet in, a personal letter per row out, each on its own date
  • You and 2 colleagues on one account
  • Cancel any time
See the Business plan
Your own platform
Private Deploy
$299 30-day pilot

For an agency or venue group that wants letters on its own address, connected to its booking tools.

  • 100 letters to prove it with real people
  • Your own web address, logo and colors on every letter and page
  • Sent through your mail server, with your data on your system
  • Triggered by the tools you already run, from Zapier to a webhook
  • From $349 a month after the pilot
Ask about a pilot

Just trying it? Every account starts with 3 free letters a month. Make one now.

Open a real one. A sample letter, made exactly the way yours would be. Open it on your phone to feel the envelope tear. Open the sample letter →

Questions people ask

Can guests RSVP inside the letter?

Yes. An invitation letter can carry an RSVP question, and guests answer with one tap. You see every answer in your account.

Can I send invitations to a whole guest list?

Yes. Upload a spreadsheet with each guest's name and email, and every guest gets their own letter with their own name. Business sends up to 500 a month, and 500 more for $50 when a month needs it.

Is it really handwritten?

No, and we never say it is. Each letter is set in one of 60 handwriting fonts you choose, on letter paper inside an envelope that tears open on screen. It reads like a handwritten note and arrives in seconds.

Do they need an app or an account?

No. The letter arrives as a link by email and opens in any phone or computer browser. You can see when each one is opened.

Can I add photos from the day and a voice note?

Yes. Add a photo, a voice note of up to 60 seconds and music. On the Business plan letters carry your company name and no GreetSpark branding.

What does it cost?

You can try three letters a month for free. Business is $39 a month for 500 letters, sent from your own email address.

Free tools

Also used by

Send your first one today

Three letters a month are free. No app for anyone, nothing to install.

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