Legal

Sub-processor List

Last updated: 20 May 2026 Callmama Limited · Hong Kong · CR No. 77766807

A sub-processor is a third party that processes personal data on CallMama's behalf to help us run the Service. This page lists CallMama's sub-processors, in line with our Privacy Policy and our Data Processing Agreement. We require each sub-processor to provide appropriate safeguards for personal data.

Infrastructure and platform sub-processors

Sub-processorPurposeData categoriesLocationTransfer safeguard
Hetzner (Hetzner Online GmbH)Application hosting, database, file/recording storageAccount data, call/message records, voicemail, call recordings, device/usage dataGermany (EU), United Kingdom, and United StatesEU SCCs / UK Addendum (for data hosted in the US)
VercelHosting of the CallMama marketing websiteWebsite visitor data (IP, device, cookie data)United StatesEU SCCs / UK Addendum
StripePayment processing and recurring (auto-renewal) billingPayment data, billing contact, transaction dataUnited StatesEU SCCs / UK Addendum

Communications / carrier sub-processors

To connect calls and deliver messages, CallMama works with upstream telecommunications carriers and messaging providers. Connecting any call or delivering any text necessarily passes routing data to other carriers.

Sub-processorPurposeData categoriesLocationTransfer safeguard
Voice carrier — to be addedCall origination and terminationCaller/called numbers, call routing and detail recordsEU SCCs / UK Addendum
SMS provider / aggregator — to be addedSMS delivery and (US) 10DLC registrationSender/recipient numbers, message metadata and contentEU SCCs / UK Addendum

Update in progress: the voice and SMS carrier rows above are being finalised. This list will be updated with the specific providers as soon as the disclosure is complete.

App distribution

The CallMama mobile apps are distributed through the Apple App Store and Google Play. These platforms process limited data in connection with app downloads, in-app purchases made through the store, and store analytics, under their own terms.

Changes and notification

We update this list when sub-processors change. Where required, we notify affected customers before a new sub-processor begins processing personal data. To be notified of changes, email privacy@callmama.com.

This page is part of CallMama's compliance documentation. See also our Privacy Policy, Terms of Service, and contact options.

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