Create a group birthday card that feels like many people, not one template

Why this format works

Give people a prompt so the messages differ. Ask each contributor for a memory, a wish or one sentence the recipient would instantly recognize as theirs.

ChronoBoxes separates the moment of creation from the moment of discovery. The recipient gets a private link, sees the waiting experience and opens the content when the configured date and any optional gate conditions are met.

Ideas you can use

• One memory from each friend.
• A “most likely to…” prediction for the next year.
• A sentence finishing “I hope you never stop…”
• Messages from people in different countries or time zones.
• A final reveal during the birthday call or party.

How to create this ChronoBox

1. Write the core message first. Decide what the recipient should remember, discover or feel before adding effects.
2. Choose a date that has context. Timing should connect to the birthday, anniversary, project, trip or milestone.
3. Add gates only when they improve the experience. A secret question or location is optional.
4. Add media only if it adds meaning. You can include up to 6 photos and 1 video for free; boxes with uploaded media can open up to 6 months after creation.
5. Share the private link. Treat it as private information and send it only to the intended recipient or participants.

What is included for free?

ChronoBoxes has no paid tier. Text-only boxes keep encrypted content inside the private link. If you add photos or video, those files use temporary server storage so they can be revealed later.

What to avoid

• Do not use ChronoBoxes as your only long-term archive; keep independent backups of important media.
• Do not publish private capsule links on public pages or social feeds if the content is personal.
• Do not make questions or location gates so difficult that they block the intended recipient.

Frequently asked questions