Canister Guide
A letter to your daughter, sealed until the right moment
Capture what you want her to hear — on her wedding day, at graduation, or any milestone — in an encrypted capsule that unlocks on your schedule.
Give her words that arrive on purpose
A letter to your daughter can hold encouragement she will need later, family stories she has not heard yet, or reflections you are not ready to share today. Canister time-locks that message so it opens on the date you set — not when an app notification gets buried.
Unlike cloud folders built for instant access, Canister is designed for intentional future delivery with client-side encryption and blockchain-backed unlock records.
Milestones worth planning for
Common unlock dates include a 16th or 18th birthday, college graduation, wedding day, or the birth of her first child. You can compose the letter now and adjust your plan tier if you need file attachments or a longer unlock horizon.
Share access on your terms
You keep ownership of the capsule and share a digital access key when you choose. Reminder emails can go to you or to her directly if you confirm permission. Essential tier is free for a short text-only message with up to a one-year unlock horizon.
Common questions
How do I send a letter to my daughter in the future?
Create a capsule at canister.co, write your letter, pick an unlock date, and share the access key with her (or a trusted adult) when you are ready. She opens it when eligibility and unlock conditions are met.
Can my daughter read the letter before the unlock date?
No. Content stays encrypted until the unlock date. This keeps surprise milestones intact.
What if I want to include childhood photos?
Use the Signature or Legacy plan to attach images and documents alongside your letter. Files are encrypted before upload on paid tiers.