CloudSponge: Product updates, Customer stories, and Insights | 2026 Cuspera

CloudSponge helped DonorsChoose make it easier for teachers and donors to share classroom projects. DonorsChoose saw a 65% increase in donation request emails after switching to CloudSponge. Teachers... can now import contacts and send more accurate donation requests. The upgrade to the mobile-friendly CloudSponge widget took just one hour. DonorsChoose now sends 112,000 donation solicitations each year using CloudSponge.
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CloudSponge helped Nextdoor boost viral growth by making it easy for users to invite neighbors using their address books. Nextdoor saw a 300% increase in address book imports after optimizing invitat...ion flows. The integration let Nextdoor launch in three new countries, including the UK and Netherlands. CloudSponge reduced integration time and maintenance costs for Nextdoor. Email invitations became a key driver for user acquisition and international expansion.
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CloudSponge helped Greenvelope make it easier for users to import contacts for email invitations. Greenvelope used CloudSponge to cut support hours, improve user experience, and expand globally. The ...company saw over 40% annual growth, added 6 non-English languages, and achieved a 20% increase in address book imports. CloudSponge let users import contacts from Gmail, Yahoo, and more, reducing manual work and support tickets. This saved development time and helped Greenvelope grow faster.
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CloudSponge helped Spokeo improve its customer onboarding by letting users import contacts in bulk from Gmail, Yahoo, and other providers. This made it easy for users to get value from the Spokeo Con...nections dashboard right away. Over 30,000 accounts imported contacts using CloudSponge, generating more than 4 million connections. Spokeo saw a 30-50x ROI by using CloudSponge instead of building the technology in-house. The integration let Spokeo focus on its core people intelligence features.
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CloudSponge helped Gainfully cut project development time by 80%. Gainfully used CloudSponge to let users import contacts from many sources with one integration. This made onboarding faster and easie...r for financial advisors. Support issues dropped by 90%. Gainfully saw a 14x return on investment and 70,000 high value connections imported.
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CloudSponge helped PledgeStar boost fundraising reach by 72%. PledgeStar used CloudSponge's contact picker to let users import address books easily. This led to a 72% increase in fundraising recipien...t list sizes and over $5 million raised from CloudSponge recipients. Onboarding time for users dropped by 80%. PledgeStar avoided building and maintaining multiple API connections, saving time and resources.
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