Whenvelope

Content rating
Teen
0+
Downloads
Content rating
Teen
Diverse Content: Discretion Advised
Users Interact
Learn more
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About this app

Someone made you a box of “Open when…” letters. Whenvelope is where you open them.

Parents, grandparents and the people cheering you on write letters for the moments ahead: when you miss home, when you ace a test, when you need a laugh, when you really need to talk. Each one waits in a sealed envelope until it’s time.

Inside an envelope you might find:
• A letter, in their own words
• A voice note, so you can hear them
• Photos
• A video message
• A song to play
• A gift card

The person who made your box sets the pace. Envelopes can open one at a time, a day or a week apart; some are saved for a certain day, like your birthday; and some are there whenever you need them. When a new one is ready, the app can let you know.

You can send something back, too: film yourself opening the box, or record a thank-you video, and it goes straight to the person who made it.

Boxes are made for big steps: heading off to college, moving out, a deployment, a wedding, a first baby.

To open yours, tap the link you were sent, or paste it into the app. There’s no account to make and no ads.

Making a box for someone? Start at whenvelope.com.
Open the “Open when…” letters someone made for you, one envelope at a time.
Updated on
Nov 3, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Messages, Photos and videos and 2 others
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

The first Whenvelope for Android. Open the “Open when…” box someone made for you, read the letters, play voice notes and videos, and send a video back.
Content rating
Teen
Diverse Content: Discretion Advised
Users Interact
Learn more

App support

About the developer
HOLLOW WOLF LLC
matt@hollow-wolf.com
193 Old Bluff Dr Ponte Vedra Beach, FL 32081-0715 United States
+1 516-983-6848