Seal Your Words
in Timeless Elegance
Create secret messages sealed with a wax stamp, revealed only when the moment is right. For the moments that matter most.
Complimentary • No Account Required
How a Letter Reaches Them
A Jar of Little Notes
One letter is for the big moment. A jar is for every day after — fill it with up to 100 small reasons, memories, and full letters, and they unwrap one each day. No peeking ahead; every note they open is theirs to keep.
Free for 7 notes · One a day, one a week, or all at once
Group gift? Fill one jar from all of us →
№ 1
Your laugh is my favorite sound in any room.
№ 2 · sealed
№ 3 · sealed
Tomorrow's note unseals itself — they can't skip ahead.
Three Acts of Devotion
Inscribe
Pour your heart onto the page. Add a title, your message, and sign with mystery or your name.
Protect
Guard your words with a secret question. Only the one who truly knows you shall unlock its contents.
Bestow
Share the enchanted link. Watch as they break the seal and discover what lies within.
Start with a Moment
Choose when they should open it. We'll help you find the words.
Letters for the Moments That Matter
Browse Open When letters by the moment you’re writing for.
Rated 4.8 out of 5
Based on 125 ratings left by people who sent a letter.
“It's super creative. Like when my bestie is far away all i have to do was just send her the message and boom”
“This is such a cute and thoughtful website, thank you!”
“I love the interface of this website, so pretty! And it’s simple to navigate as well.”
“Thank you it’s so nice, I can send letter even through online such a great help”
“Beautiful experience and easy.”
“I lovee everything. When I get a job, I’ll write and pay here with the premium features this time. Great design!”
“I LOVE ITTT, THANK YOUU FOR MAKINGG THISSSS U MADE MY DAYYY”
“Soo daaamn great ideaa man. How did you came with thisssssss..so greattttt”
“so fun, and creative”
Sent a letter? Tell people how it went.
Crafted with Intention
The Unsealing Ritual
A wax-sealed envelope that yields only to patient, intentional touch. Hold to break the seal.
Guardian Questions
Protect your words with riddles only your beloved can solve.
Ephemeral Privacy
No accounts, no traces. Your words exist only between sender and receiver.
Instant Enchantment
Create in moments, share in seconds. Magic should not require waiting.
A Gift Inside
Seal a gift card, e-ticket, or voucher inside the letter. They read your words, then unwrap the gift.
A Song for the Moment
Their favourite song begins the instant the seal breaks — a soundtrack for your words.
Frequently Asked Questions
How does OpenWhen work?
OpenWhen is the digital version of "Open When" letters. Write a message for a specific moment — an anniversary, a bad day, a long-distance milestone — seal it with a virtual wax stamp, set a guardian question, and share the link. Recipients must answer the question and hold to break the seal. No account needed.
Is OpenWhen free to use?
Yes, OpenWhen is completely free. No subscription, no hidden fees, no payment required. Create unlimited sealed messages at no cost.
Do I need to create an account?
No account required. Simply visit openwhen.cards, compose your message, and share the link. No registration, no login, no personal information needed.
How secure are my messages?
Messages are protected by guardian questions and ephemeral storage. No permanent database records are maintained. Messages exist only between sender and receiver.
Can I send anonymous messages?
Yes. You can choose to sign your message or remain anonymous. The signature field is optional.
What is the wax seal unsealing ritual?
The unsealing ritual requires recipients to hold their finger on the wax seal until it breaks. This creates an intentional, meaningful moment of revelation.
Can recipients read messages without answering the question?
No. Recipients must correctly answer the guardian question before they can access the unsealing ritual. Wrong answers prevent access.
How long do messages last?
Messages are ephemeral and designed for temporary sharing. No permanent storage means your words remain private between you and your recipient.
Can I attach a gift card to my letter?
Yes. Premium letters can carry a gift inside — attach any gift card, e-ticket, or voucher as a PDF or image, and your recipient unwraps it after breaking the seal. The file stays private until the letter is unlocked.