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Time Capsule Letters

Write Letters Your Kids Will Open in 10 Years

Imagine your daughter opening a sealed letter from you on her 18th birthday. Your words of wisdom, frozen in time, delivered exactly when she needs them most.

Write Your First Letter

Some words are meant for the future

You know things now that your kids won't understand until they're older. The advice they'll roll their eyes at today will mean everything to them on their wedding day. Time capsule letters let you speak to the person they'll become.

How Time Capsule Letters Work

1

Write Your Letter

Pour your heart out. Share stories, advice, hopes, and dreams. Use writing prompts if you need inspiration.

2

Choose When It Opens

Pick a specific date or milestone - their 18th birthday, graduation day, wedding day, or any date you choose.

3

Seal & Send to the Future

Once sealed, the letter is locked until the unlock date. When the day arrives, they'll be notified and can read your words.

Why Parents Love Time Capsule Letters

Truly Sealed

Once you seal a letter, even you can't read it or edit it. Your words are frozen in time, exactly as you wrote them.

Automatic Delivery

Recipients are notified when their letter unlocks. No need to remember - the letter will find them when the time is right.

Writing Prompts

Not sure what to write? Our prompts help you capture stories, share advice, and express things you might not say out loud.

Words That Last

Your letters are safely stored and will unlock even if you're not there. Your words can live on for generations.

Perfect for life's biggest moments

Time capsule letters turn ordinary days into treasured memories. Write to your children about who they are today, and let them rediscover those words when they need them most.

  • 18th birthday letters
  • Graduation day advice
  • Wedding day blessings
  • First child congratulations
  • Annual birthday notes

To: Emma, Age 18

Opens: June 15, 2035

Frequently Asked Questions

You write a letter, choose an unlock date (like your child's 18th birthday), and seal it. The letter stays locked until the date arrives, then automatically unlocks and the recipient is notified. They can read your words exactly when you intended.
Once a letter is sealed, it cannot be edited. This is intentional - your words are frozen in time, exactly as you wrote them. You can preview your letter before sealing and choose to save it as a draft until you're ready.
Your letters are safely stored and will still unlock on the date you specified. This is one of the most meaningful aspects of time capsule letters - your words live on. Family account admins can also manage letters if needed.
You can write time capsule letters to any family member in your KinPatch network - children, parents, siblings, grandchildren, or even yourself. Many parents write letters to each other for anniversaries.
Popular occasions include 18th birthdays, 21st birthdays, graduation day, wedding day, having their first child, or any milestone date you choose. Some parents write annual birthday letters that unlock one year at a time.

More ways to preserve family memories

Family Quote Book

Capture the hilarious things your kids say before you forget them.

Life Milestones

Track first steps, first words, and every important moment.

Private Photos

Share family photos without sharing with the world.

What would you tell them?

Your kids won't be little forever. Write the letter now that they'll treasure for the rest of their lives.

Start Writing Today

Free to get started. No credit card required.