Addresses for real mail.
CardKeep helps you save and organize mailing addresses — scan an envelope, confirm the details, and keep your people close.
My Addresses
Lists
Recent
Mom & Dad
Sarah Johnson
The Smiths
How it works
Simple by design
Scan envelopes
Point your camera at any envelope to capture an address instantly. No typing required.
Organize your people
Group contacts into lists for family, friends, holiday cards, and more.
Ready every year
Your address book is always up to date when the season rolls around.
Share a link. Get the addresses.
Collecting addresses from a crowd has never been easier. Perfect for weddings, graduations, holiday parties, and reunions.
- Create an Event from any list
- Generate a shareable URL in seconds
- Guests fill in their own addresses
- Addresses sync straight to your app
- Optionally collect RSVPs with event details
Emily's Wedding
Please share your mailing address
Class of 2025
Graduation Party RSVP
Will you attend?
Perfect for
Every reason to write
Holiday Cards
Keep your list ready for the season
Weddings
Collect addresses from all your guests
Graduations
Invite everyone who matters
Reunions
Reconnect with old friends
Baby Showers
Share the joy with loved ones
Your privacy, protected
Your addresses are yours. Securely synced across your devices, never shared or sold to anyone.