Sinch

Sinch is a Swedish communications technology company that provides cloud-based infrastructure and software for business-to-customer communication. Its platform enables enterprises, software companies and communications service providers to send and receive messages, place and manage voice calls, deliver email, verify users, operate conversational journeys and connect communications applications to mobile and fixed-line networks. The company is best known as a communications-platform-as-a-service, or CPaaS, provider, but its activities also include customer-engagement applications, email-delivery software and telecom network connectivity. The company was founded in 2008 as CLX Communications by Johan Hedberg, Robert Gerstmann, Kristian Männik, Henrik Sandell, Björn Zethraeus and Kjell Arvidsson. Its early development focused on enterprise messaging, mobile-operator services and the technical infrastructure required to deliver communications reliably across national borders. CLX expanded through acquisitions, including Symsoft in 2009, which added operator-facing business-support and messaging capabilities, and the North American messaging assets of Voltari in 2014. It listed on Nasdaq Stockholm in October 2015 under the CLX ticker. A major phase of expansion began in 2016. CLX acquired Mblox, a large international mobile-messaging provider, and separately acquired Sinch AB, a Stockholm- and San Francisco-based software company that had been spun out of Rebtel. The Sinch software business brought real-time voice, video, instant messaging and mobile-number verification capabilities, while Mblox expanded global messaging reach. In 2017 and 2018, CLX added Xura Secure Communications, Dialogue Group, Unwire Communications and Vehicle, broadening its capabilities in operator security, fraud prevention, messaging, rich media and personalized video. In February 2019, CLX Communications introduced a unified corporate identity under the Sinch name. The rebrand brought the CLX, Symsoft, Sinch and Vehicle businesses together under one commercial identity, although the listed legal entity remained the successor to CLX Communications. This created the modern Sinch brand and positioned the company as an integrated communications infrastructure provider rather than a collection of separately branded messaging and operator businesses. Sinch then pursued a particularly aggressive acquisition strategy from 2019 through 2021. It acquired myElefant and Brazilian connectivity provider TWW in 2019, followed by Chatlayer, Wavy, SAP Digital Interconnect and ACL Mobile in 2020. In 2021 it acquired Inteliquent, strengthening its voice-network and numbering position in the United States; MessageMedia, adding no-code messaging applications for small and medium-sized businesses; MessengerPeople, adding conversational messaging software; and Pathwire, whose Mailgun, Mailjet and Email on Acid products expanded Sinch into developer-focused email delivery and email testing. These transactions materially increased Sinch’s geographic footprint, enterprise customer base and product breadth, while also increasing the complexity and financial leverage of the business. Sinch’s current offering is organized around three connected capabilities: an API Platform, Applications and Network Connectivity. The API Platform gives developers access to messaging, voice, email, verification and related communications functions. Applications provide ready-to-use tools for marketing, customer care, conversational messaging and contact-center workflows. Network Connectivity gives enterprises and communications providers access to carrier relationships, messaging routes, voice termination, numbering, fraud-prevention tools and operator software. Sinch also emphasizes direct connections to telecom operators and infrastructure control as a way to improve delivery quality, security, compliance and latency. The company serves customers across the Americas, EMEA and APAC. Its produ…

Sinch’s history combines the development of CLX Communications, a Swedish cloud communications and telecom-software company founded in 2008, with the later integration of the separately founded Sinch software business. CLX was established by Johan Hedberg, Robert Gerstmann, Kristian Männik, Henrik Sandell, Björn Zethraeus and Kjell Arvidsson. It began by helping businesses and mobile operators exchange messages and manage communications services across fragmented national telecom markets. The company’s early model depended on software, carrier relationships and operational systems that could support high-volume, cross-border delivery. In December 2009, CLX acquired Symsoft, a Stockholm company founded in 1989 that had originally supplied consulting services and later developed products for mobile operators. Symsoft brought real-time charging, messaging, value-added-services, fraud-prevention and business-support-system expertise. Its operator platform lineage included a real-time charging deployment for Telia Mobile in Sweden in 1999 and the later Symsoft Service Delivery Platform. Within CLX, Symsoft became the Operator Division, serving mobile network operators, mobile virtual network operators and mobile virtual network enablers. CLX expanded its North American messaging position in 2014 by acquiring the assets of Voltari’s mobile-messaging business. The transaction provided U.S. and Canadian customer relationships, operator contracts and employees. In January 2015, CLX acquired a majority interest in Caleo Technologies, adding business-support-system expertise, and later acquired the remaining interest. In October 2015, CLX completed its IPO and began trading on Nasdaq Stockholm. The listing gave the company publicly traded equity with which to support its expansion strategy. The next stage was international messaging consolidation. In 2016, CLX acquired Mblox for cash consideration of USD 117 million. Mblox had developed a global carrier-grade messaging platform serving enterprises with SMS, MMS, push notifications, short codes and virtual mobile numbers. The acquisition increased CLX’s reach and scale in enterprise-to-consumer messaging. The Mblox business had also inherited a controversial history associated with premium SMS billing and allegations that services using its billing infrastructure enabled mobile-phone cramming. Mblox maintained that it did not create or promote the offending services and that its role was to monitor customers using its platform. After regulatory criticism and fines involving service operators, the company invested in compliance controls; in 2013 it sold its premium-SMS business and focused on enterprise messaging. CLX later retired the Mblox and CardBoardFish brands. In December 2016, CLX acquired Sinch AB, a company founded in 2014 by Andreas Bernström in Stockholm and San Francisco after being spun out of Rebtel. The Sinch software business initially targeted mobile-first application developers and launched voice and instant-messaging products in May 2014, followed by an SMS API later that year. Its capabilities included real-time voice, video, messaging and mobile-number verification. Although the acquisition price and the corporate transaction belonged to the CLX legal entity, the Sinch name eventually became the group’s main public identity. In 2017, CLX acquired Xura Secure Communications GmbH and Dialogue Group. Xura added German customer relationships and secure communications capabilities. Dialogue increased international messaging scale and contributed Sentinel, a product line focused on fraud detection and revenue assurance in enterprise messaging. CLX also entered a strategic partnership with Google connected to the early adoption of Rich Communications Services. The initiative anticipated richer, branded and interactive business messaging within consumers’ native messaging applications. In 2018, CLX acquired Unwire Communications of Denmark and Vehicle Agency of Seattle. Unwire strengthened the Nordic communications platform and helped make CLX the largest CPaaS provider in the Nordic region at the time. Vehicle added personalized video and rich-media communications. During the same period, CLX redirected investment away from certain core-network-as-a-service and Internet-of-Things activities toward advanced messaging, RCS, voice and personalized video. This decision concentrated resources on communication products that were closer to the company’s emerging enterprise platform strategy. In February 2019, CLX announced a new corporate brand and visual identity under the Sinch name. The change unified products and operating businesses that had previously been marketed as CLX, Symsoft, Sinch and Vehicle. The rebrand was more than a cosmetic change: it presented the company as a single global communications platform spanning business messaging, voice, video, operator services and enterprise software. The legal company became Sinch AB, while the Nasdaq Stockholm listing continued under the successor corporate structure. Sinch continued to expand through acquisitions in 2019. It acquired Paris-based myElefant, a software-as-a-service provider associated with mobile landing pages and conversational messaging, including early work with RCS, Facebook Messenger and WhatsApp. It also acquired Brazilian connectivity company TWW, which served thousands of business customers and gave Sinch greater access to Brazil’s enterprise messaging market. The acquisition program accelerated in 2020 and 2021. Sinch acquired Chatlayer, adding multilingual AI chatbots and voicebots using natural-language understanding. It agreed to acquire Wavy, a Brazilian messaging provider, and completed that transaction in 2021. SAP Digital Interconnect added programmable communications, carrier messaging and enterprise solutions, while ACL Mobile expanded Sinch’s presence in India and Southeast Asia. In 2021, Sinch acquired Inteliquent, a major U.S. voice communications and interconnection provider. Inteliquent added enterprise voice APIs, phone-number provisioning, carrier services, call termination and a substantial North American voice network. Sinch then acquired MessageMedia, whose no-code software helped small and medium-sized businesses use two-way mobile messaging. MessengerPeople added conversational messaging software for channels such as WhatsApp, Telegram and Apple Business Chat. Finally, Sinch acquired Pathwire, bringing the Mailgun, Mailjet and Email on Acid products into the group. Pathwire’s addition gave Sinch a major developer- and marketer-oriented email business and broadened its communications stack beyond mobile messaging and voice. The scale of the 2021 transactions transformed Sinch into a much larger but more complex business. Integration, debt management, product rationalization and operating-model coordination became central management issues. In 2022, Sinch moved toward a new operating model organized around business units and central functions. The company increasingly presented its offering through three connected pillars: API Platform, Applications and Network Connectivity. The API Platform supplies programmable messaging, voice, email and verification services, together with tools for phone-number management, analytics, pricing and integrations with major enterprise software platforms. Applications offer ready-to-use products for marketing, customer care, conversational messaging and contact-center activity. Network Connectivity provides carrier relationships, direct messaging routes, voice infrastructure, numbering and operator software, including services for fraud prevention, revenue assurance and telecom network management. Sinch’s later strategy has emphasized profitable growth, operational efficiency, RCS, email, partner ecosystems and AI-enabled communication. In 2025, the company announced that it had delivered more than one billion RCS Business Messages worldwide and that its RCS for Business offering had live coverage across major U.S. Tier-1 carriers. The company has also described its infrastructure as a foundation for communications generated by AI assistants and autonomous software agents. In June 2026, Jonas Dahlberg, who had joined Sinch as CFO in 2025, became acting CEO after Laurinda Pang. Sophie Cheng became chief marketing officer, while Jonathan Bean moved from chief marketing officer to executive vice president for EMEA and global partnerships. Sinch remained a publicly listed Swedish company headquartered in Stockholm, serving enterprise and software customers globally across messaging, voice, email, verification and conversational communications.

1. 2026Acting CEO and marketing leadership changes

   Jonas Dahlberg became acting CEO and Sophie Cheng became chief marketing officer; Jonathan Bean moved to an EMEA and global partnerships role.

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2. 2025One billion RCS Business Messages delivered

   Sinch announced that it had surpassed one billion RCS Business Messages delivered globally.

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3. 2022Operating-model reorganization

   Sinch implemented a new operating model with business units supported by central functions following its rapid acquisition period.

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4. 2021Major acquisitions in voice, messaging, conversations and email

   Sinch acquired Inteliquent, MessageMedia, MessengerPeople and Pathwire, creating a broader communications platform across voice, mobile messaging, conversational channels and email.

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5. 2020Expansion into AI, Brazil, SAP and Asia

   Sinch acquired Chatlayer, Wavy, SAP Digital Interconnect and ACL Mobile, broadening its portfolio and geographic reach.

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6. 2019Group-wide Sinch rebrand

   CLX unified its corporate identity and operating brands under the Sinch name.

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7. 2018Unwire and Vehicle acquired

   Unwire strengthened Sinch’s Nordic CPaaS presence, while Vehicle added personalized video and rich-media communications.

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8. 2017Xura and Dialogue acquisitions

   The acquisitions expanded secure communications, international messaging, fraud prevention and revenue-assurance capabilities.

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9. 2016Mblox and Sinch acquisitions

   CLX acquired Mblox to expand messaging scale and acquired Sinch AB to add voice, video and verification products.

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10. 2015Nasdaq Stockholm IPO

    CLX Communications completed its IPO and began trading on Nasdaq Stockholm under the CLX ticker.

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11. 2014Voltari messaging assets acquired

    CLX acquired Voltari’s North American mobile-messaging assets, strengthening its U.S. and Canadian operator relationships.

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12. 2014Sinch software business launched

    Andreas Bernström founded the Sinch software business after its spin-out from Rebtel, initially focusing on voice, instant messaging, SMS APIs and mobile application developers.

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13. 2009Symsoft acquired

    CLX acquired Symsoft, adding operator software, real-time charging, messaging and business-support capabilities.

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14. 2008CLX Communications founded

    Johan Hedberg, Robert Gerstmann, Kristian Männik, Henrik Sandell, Björn Zethraeus and Kjell Arvidsson founded the predecessor company that became Sinch.

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An enterprise communications infrastructure and CPaaS provider combining programmable messaging, voice, email and verification APIs with customer-engagement applications and direct telecom network connectivity.

• Sinch MessagingBusiness messaging APIs

  Programmable SMS, MMS and richer messaging services that allow businesses to send notifications, authentication codes, alerts, marketing messages and two-way customer conversations. The offering is supported by Sinch’s global carrier connectivity and can be combined with fallback routing across channels.

• RCS for BusinessRich business messaging2017

  A rich-messaging service based on Rich Communications Services. It enables branded and verified business messages with interactive content, suggested actions, media and conversational flows, while allowing orchestration with SMS, MMS, WhatsApp, email and voice.

• Sinch VoiceVoice APIs and network services2014

  Programmable voice APIs and carrier-interconnection services for embedded calling, contact-center workflows, phone numbers, call termination and other voice use cases. The portfolio was strengthened by the acquisition of Inteliquent and its U.S. voice network.

• Sinch VideoVideo communications APIs2014

  Video communication capabilities inherited from the original Sinch software business and expanded through the acquisition of Vehicle. The product family supports rich and personalized communication experiences for applications and customer engagement.

• Sinch VerificationIdentity and authentication2014

  Mobile-number verification and authentication tools used to confirm user identities through messaging and other communication channels. Verification is positioned as a programmable service for onboarding, account protection and transaction security.

• Sinch EmailEmail communications2021

  Business email capabilities for transactional, marketing and customer communications. The portfolio includes developer-oriented delivery infrastructure and tools for improving email performance and inbox placement.

• Sinch MailgunDeveloper email delivery2021

  An API-focused email delivery platform acquired through Pathwire. Mailgun is designed for developers and software teams that need to send, route, monitor and analyze transactional and application-generated email at scale.

• Sinch MailjetEmail marketing and transactional email2021

  An email platform for creating, sending and managing marketing and transactional email. It extends Sinch’s email portfolio toward marketers and business users as well as technical teams.

• Sinch Email on AcidEmail testing and quality assurance2021

  An email testing and quality-assurance product from the Pathwire portfolio. It helps teams preview email rendering, identify compatibility problems and improve the reliability of campaigns across clients and devices.

• Sinch EngageConversational messaging applications2021

  A business-facing conversational messaging suite descended from MessengerPeople. It helps organizations manage customer conversations through channels such as WhatsApp and other messaging applications without requiring every user to build directly on APIs.

• Sinch Network ConnectivityTelecom connectivity and operator services2008

  Carrier connectivity, messaging routes, voice interconnection, numbering, operator software and related services for enterprises, mobile operators and communications service providers. The offering also includes tools associated with fraud prevention, revenue assurance and network modernization.

• 2025RCS for Business U.S. carrier expansion

  United States

  Sinch promoted RCS for Business with coverage across major U.S. Tier-1 mobile operators ahead of the holiday shopping season, emphasizing branded, verified and interactive customer engagement.

  Outcome. The initiative strengthened Sinch’s positioning in U.S. rich business messaging and connected RCS with SMS, MMS, WhatsApp, email and voice fallback.

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• 2017RCS early-access partnership with Google

  Global

  CLX joined Google’s early-access initiative for Rich Communications Services, helping brands and developers experiment with richer business messaging embedded in native messaging applications.

  Outcome. The partnership established an early position in the development of business RCS and contributed to Sinch’s later rich-messaging strategy.

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• 2025Scale RCS Business MessagingProduct launch

  RCS was becoming a more prominent channel for branded, interactive and conversational customer communications.

  What changed. Sinch expanded RCS for Business reach and announced that it had delivered more than one billion RCS Business Messages worldwide.

  Aftermath. RCS became a visible strategic growth area alongside messaging APIs, email and voice.

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• 2022Implement a new operating modelStrategy

  Rapid acquisitions had created a large portfolio of businesses requiring clearer accountability and coordination.

  What changed. Sinch introduced a model with five business units supported by central functions.

  Aftermath. The operating model was intended to improve integration, execution and accountability across the expanded group.

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• 2021Expand into U.S. voice, SMB messaging, conversations and emailM&A

  Sinch aimed to provide a more complete communications stack spanning network infrastructure, APIs, business applications and email.

  What changed. Sinch acquired Inteliquent, MessageMedia, MessengerPeople and Pathwire during 2021.

  Aftermath. The acquisitions substantially increased scale and capabilities but also created integration, operating-model and financing challenges that shaped subsequent strategy.

  Pathwire enterprise value. Approximately USD 1.9 billion (Announced September 30, 2021; transaction closed December 7, 2021)

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• 2020Build a broader communications platform through acquisitionsM&A

  Sinch sought to combine messaging, voice, enterprise software, AI conversational tools, carrier services and regional connectivity into a broader global platform.

  What changed. The company agreed to acquire Chatlayer, Wavy, SAP Digital Interconnect and ACL Mobile during 2020, adding AI chatbots and voicebots, Brazilian messaging, SAP’s programmable communications activities and South Asian communications services.

  Aftermath. The transactions expanded Sinch’s product coverage and geographic footprint ahead of the larger 2021 acquisition wave.

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• 2019Adopt Sinch as the unified corporate brandStrategy

  The company operated a portfolio of businesses and products under the CLX, Symsoft, Sinch and Vehicle names after several acquisitions.

  What changed. CLX Communications launched a shared corporate identity and integrated the main businesses under the Sinch name, later changing the legal company name to Sinch AB.

  Aftermath. The rebrand created a single global identity for the company’s messaging, voice, video, operator and enterprise communication offerings.

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• 2018Redirect investment toward advanced communicationsStrategy

  Sinch determined that investment previously directed toward core-network-as-a-service and Internet-of-Things activities should be concentrated on advanced messaging, RCS, voice and personalized video.

  What changed. The company stopped further development of the specified core-network and IoT activities while continuing to meet existing customer commitments and expanding financing capacity for mergers and acquisitions.

  Aftermath. The decision sharpened Sinch’s focus on communications products that became central to its unified CPaaS strategy.

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• 2022FTC warning concerning Inteliquent robocallsControversy

  The U.S. Federal Trade Commission sent Inteliquent a cease-and-desist warning concerning illegal robocall traffic carried through its network. The warning referenced campaigns involving Social Security Administration impersonation, AT&T and DirecTV impersonation, utility scams, automobile-warranty calls and credit-card interest-rate reduction offers.

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• 2006Mblox premium-SMS billing and cramming criticismControversy

  Mblox, later acquired by CLX Communications, became associated with public criticism and regulatory action involving mobile services that allegedly enrolled consumers in unwanted subscriptions and charged them through carrier bills. The company stated that it did not create or promote the offending services and that its responsibility was to monitor customers using its billing infrastructure. It later invested in compliance controls and sold its premium-SMS business in 2013.

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• 2026Jonas Dahlberg became acting CEO

  Jonas Dahlberg, who had been Sinch’s CFO since 2025, became acting CEO in June 2026, succeeding Laurinda Pang.

  Leadership change
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• 2026Sinch appointed Sophie Cheng as Chief Marketing Officer

  Sophie Cheng became chief marketing officer, succeeding Jonathan Bean, who moved to an executive vice president role covering EMEA and global partnerships.

  Leadership change
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• 2025Sinch surpassed one billion RCS Business Messages

  Sinch announced that it had delivered more than one billion RCS Business Messages worldwide, highlighting the growth of richer, branded and interactive business messaging.

  Product generation
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• 2025Sinch reached full RCS coverage across major U.S. Tier-1 carriers

  Sinch announced live RCS for Business coverage with all major U.S. Tier-1 mobile operators and promoted orchestration across RCS, SMS, MMS, WhatsApp, email and voice.

  Product launch
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• 2021Sinch acquired Inteliquent

  The acquisition strengthened Sinch’s U.S. voice communications, numbering, carrier interconnection and telecom infrastructure capabilities.

  M&A
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• 2021Sinch acquired MessageMedia

  MessageMedia added no-code, web-based two-way messaging applications aimed particularly at small and medium-sized businesses in the United States, Australia, New Zealand and Europe.

  M&A
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• 2021Sinch acquired MessengerPeople

  The acquisition added software for customer conversations across WhatsApp, Telegram and Apple Business Chat.

  M&A
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• 2021Sinch acquired Pathwire

  Pathwire brought Mailgun, Mailjet and Email on Acid into Sinch, expanding the group into cloud email delivery and email quality assurance.

  M&A
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• 2020Sinch acquired Wavy

  The transaction expanded Sinch’s messaging presence in Brazil and Latin America.

  M&A
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• 2020Sinch acquired SAP Digital Interconnect

  The acquisition added programmable communications, carrier messaging and enterprise communication services formerly operated within SAP.

  M&A
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• 2020Sinch acquired ACL Mobile

  The acquisition expanded Sinch’s communications services in India and Southeast Asia.

  M&A
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• 2019Sinch unified its corporate brand identity

  CLX Communications brought its CLX, Symsoft, Sinch and Vehicle activities under the Sinch name and adopted a unified visual identity.

  Other
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• 2017CLX partnered with Google on RCS messaging

  CLX joined Google’s early-access effort for enterprise RCS messaging, allowing brands to develop richer messaging experiences in native mobile messaging applications.

  Other
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• 2016CLX acquired Mblox

  The acquisition of Mblox expanded CLX’s global enterprise messaging scale and carrier connectivity.

  M&A
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• 2016CLX acquired Sinch AB

  The acquisition added voice, video and mobile-number verification capabilities and later supplied the name for the group-wide brand.

  M&A
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• 2015CLX Communications completed its Nasdaq Stockholm IPO

  The predecessor company completed its initial public offering and began trading on Nasdaq Stockholm under the CLX ticker.

  Other
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1. Sinch AB
2. Sinch Group: Our history and acquisitions
3. Sinch Group: About Sinch
4. Sinch Group: What we offer
5. Sinch Group: Global leadership team
6. Sinch Group: Share information
7. Sinch Group: 2025 annual report publication
8. FTC warning letter to Inteliquent
9. Sinch: RCS coverage across U.S. Tier-1 carriers
10. Sinch: Changes to management team
11. Group-wide Sinch rebrand
12. Operating-model reorganization
13. Sinch appointed Sophie Cheng as Chief Marketing Officer
14. Sinch acquired Inteliquent