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Technologies / Sinch / Telstra

Companies using Sinch and Telstra

4 companies in our data have public evidence for both Sinch and Telstra, and 4 name both in their own subprocessor list. Each company below links to the source for every claim. Our coverage is partial, so this is not everyone.

4companies use both
7%of Sinch users
67%of Telstra users
4name both as subprocessors

The companies

Strongest evidence first: a company naming both in its own subprocessor list comes before one seen on its website or in job postings.

Subprocessor listPrivacy policyWebsiteJob postings

CompanySinchTelstra
Esendex UKesendex.co.ukEsendex provides a multichannel messaging platform and APIs for sending and managing messages across channels such as SMS, WhatsApp, RCS, email and voice.Communications
Esendex AUesendex.com.auEsendex provides a multichannel messaging platform and APIs for sending SMS, WhatsApp, RCS, email and voice messages.Communications
kudosity.comKudosity provides a business messaging platform for SMS, MMS, WhatsApp, RCS and conversational AI, with a REST API and integrations.CommunicationsDeveloper tools
Spryngspryng.beSpryng provides SMS, RCS and WhatsApp messaging services and APIs.Communications

The two technologies

Sinch

Email and communications

Sinch is a communications platform that provides APIs and applications for messaging, voice, email, verification, and numbers. It is used by businesses to engage customers, send notifications and alerts, verify identities, and support customer care across channels such as SMS, RCS, WhatsApp, and voice.

Summarized from sinch.com on 8 Nov 2026.

7% of the 55 companies we see using Sinch also show the other.

All 55 companies using Sinch51 name it as a subprocessorMore in Email and communications

Telstra

Cloud and infrastructure

67% of the 6 companies we see using Telstra also show the other.

All 6 companies using Telstra6 name it as a subprocessorMore in Cloud and infrastructure

Other pairs

Companies with their own evidence for both.

More with Sinch

Cloudflare55companiesGoogle Workspace39companiesAmazon Web Services33companiesGoogle28companiesGoogle Tag Manager27companiesTwilio22companies

More with Telstra

Cloudflare6companiesMeta5companiesMicrosoft5companies

Questions

How many companies use both Sinch and Telstra?

4 companies in StrataDB's data have public evidence for both, and 4 of them name both in their own subprocessor list, the strongest evidence we hold. Our coverage is partial, so the real number is higher.

Which companies use Sinch and Telstra?

Esendex UK, Esendex AU, kudosity.com and Spryng. Each one links to the evidence behind it.

How does StrataDB know a company uses Sinch and Telstra?

From four kinds of public evidence: subprocessor lists, privacy policies, website code and job postings. Each is kept apart with its source and the date we saw it. A company missing here means we found no evidence, not that it does not use them.

Find every company using Sinch and Telstra

See the full list with the source for each company, and run the same lookup for any technology from the API, Claude or your browser.

  • Every company and vendor, with its public source
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