Sharing Made Easy
Your business grows faster when it's easy for your users to tell their friends about you.
Your Form
5 minutes later...
Your Form with
Why choose CloudSponge?
Our widget will let your users input their friends' email addresses into your "refer a friend" form without typing anything.
CloudSponge integrates with the most popular webmail services including Yahoo, Hotmail and Gmail and desktop address books such as Outlook and Mac OS X Address Book.
Our API gives you full control over every pixel of the user experience if our widget isn't right for you or if you're building a "find your friends" feature to help your users make connections on your website.
The options are endless, you can use your user's contacts however you like.
Single Access Point
Integrate once and get access to all of our supported address book sources rather than connecting to each one individually.
OAuth User Consent
We use OAuth User Consent APIs whenever they're available because your users don't want to share their important passwords with anyone.
Domain Knowledge Experts
We make sure your contact importer keeps working when third parties make changes.
Software-as-a-Service
Reliable, auto-scaled service means that you don't have to worry about uptime or scaling.
Plug CloudSponge into your website
in 3 easy steps
Create a CloudSponge account
Paste our code into your site
Grow faster!
What are people saying about us?
"Integrating CloudSponge was a snap. It makes it easy for our users to invite their friends and family to join Kiva, and to send them Kiva Cards ..."
Paul Ericksen
Senior Software Engineer
Kiva.org
"... We picked Cloudsponge because of the features they offer coupled with their robust SDKs and support, and have found the service very reliable ..."
Tim Cederman-Haysom
Director of Product
SurveyMonkey
"... Since implementing CloudSponge ... more customers get through the process of sending an eCard ..."
Mike Bracco
Product Manager
JibJab
"Contact importing is a critical function for About.me and CloudSponge has been doing an excellent job for us. The team has been extremely helpful ..."
Andy Hao
Chief Technology Officer
About.me
"We are excited about what CloudSponge will be able to do for us as we transition away from Plaxo ..."
Kevin Diamond
Chief Technology Officer
Hautelook
"It literally took us 10 minutes to integrate with CloudSponge and doubled the number of invitations sent by our customers."
Dafeng Guo
Co-founder
Striking.ly
Sign up and accelerate your growth!
It'll only take a few minutes to set up.
It's free for developers.
$25/domain/monthor$275/domain/year
- FREE for developers
- Unlimited address book imports
- White-labeled for full customization and rebranding
- All supported contact sources
- API and Widget access
- No contracts, cancel anytime
Predictable Pricing
Our unlimited subscriptions let you focus on growing your business without worrying about increasing costs.
About the Free Accounts
If you're only using development-only domains (like localhost, 127.0.0.1, dev.*, staging.*, *.local or anything without a TLD) we won't ask you for a credit card number or try to bill you. Ever.