| Amazon Web Services | Hosting Provider | Europe | Cloud Infrastructure |
| Aviva Voice Systems and Services | Certified SMS Platform Provider | Spain | Communication |
| Bandwidth | SMS Service Provider | USA and Canada | Communication |
| BICS SA/ | SMS Aggregator | Belgium | Communication |
| Bouygues Telecom | Network Operator | France | |
| Brennercom SpA | Hosting Provider | Italy | Cloud Infrastructure |
| British Telecom | Network Operator | United Kingdom | |
| Cable and Wireless Guernsey Ltd (trading as Sure) | Network Operator | Guernsey | |
| CLX Networks AB (trading as Sinch) | SMS Aggregator | Sweden | Communication |
| CM.com Netherlands | SMS Aggregator | Netherlands | Communication |
| Commify Iberia | Business Communication service provider | Spain | Communication |
| Commify Italia SpA | Business Communication service provider | Italy | Communication |
| Commify UK | Business Communication service provider | United Kingdom | Communication |
| Coop Italia Soc. Coop | Virtual Network Operator | Italy | |
| Databricks | Data Insights Provider | UK and Europe | |
| Data Dog | Server Monitoring | Europe | Cloud Infrastructure |
| Deutsche Telekom A.G | Network Operator | Germany | |
| Eagle Eye Solutions | SMS Aggregator | United Kingdom | Communication |
| Eagle Eye Technology | SMS Aggregator | United Kingdom | Communication |
| EE | Network Operator | United Kingdom | |
| Ensono | Data Centre Provider | United Kingdom | |
| Facebook Ireland | Whatsapp Service Provider | UK and USA | HR & People |
| Fastweb S.p.A | Virtual Network Operator | Italy | |
| Free Mobile | Network Operator | France | |
| Global Switch Estates 2 | Data Centre | United Kingdom | |
| Google Cloud Platform | Hosting Provider | Europe | Cloud Infrastructure |
| Hay Systems Ltd (trading as HSL) | SMS Service Provider | United Kingdom – now LinkMobility owned | Communication |
| High Connexion | SMS Aggregator | France | Communication |
| Hutchinson 3G UK Limited (trading as Three) | Network Operator | United Kingdom | |
| ICUK Computing Services Limited (CIX) | Email Hosting Provider | United Kingdom | Cloud Infrastructure |
| Iliad Italia SpA | Virtual Network Operator | Italy | |
| IMImobile Europe Ltd (trading as Infracast) | SMS Aggregator | United Kingdom, Germany | Communication |
| Infobip | SMS Aggregator | Croatia | Communication |
| JT Limited (trading as Jersey Telecom) | Network Data Provider | Jersey | |
| Key IVR | IVR and Web Payment Provider | United Kingdom | Customer Support |
| Lebara Group | Virtual SMS Aggregator | Netherlands | Communication |
| Mailgun Technologies | Email Provider | Europe | Communication |
| Mailjet | Email Provider | Europe | Communication |
| MessageBird | SMS Aggregator and Whatsapp API services | Netherlands | Communication |
| Meta Platforms Ireland | WhatsApp Provider | Worldwide | HR & People |
| Microsoft Ireland Operations Limited (Microsoft Azure) | Hosting Provider | Europe | Cloud Infrastructure |
| Mitto A.G | SMS Aggregator | Switzerland | Communication |
| Modica Group | SMS Aggregator | New Zealand | Communication |
| Mr Messaging | SMS Aggregator | Malta | Communication |
| M-STAT | SMS Aggregator | Greece | Communication |
| Multiconnect | SMS Aggregator | Germany | Communication |
| Neustar | Network Data Provider | USA | |
| Nexmo | Whatsapp API Services Provider | USA | HR & People |
| Node4 | Hosting Provider | United Kingdom | Cloud Infrastructure |
| NRJ | Virtual SMS Aggregator | LinkMobility – Netherlands (formerly Netsize) | Communication |
| NTH | SMS Aggregator | Switzerland | Communication |
| OpenMarket | SMS Aggregator | USA | Communication |
| Orange | Network Operator | France | |
| Orange Espana | Network Operator | Spain | |
| Phonovation | SMS Aggregator | Ireland | Communication |
| Pivotel Communications PTY Limited (trading as Circuit 4) | Virtual Network Operator | Australia | |
| Poste Mobile S.p.A | Network Operator | Italy | |
| Reach Data | SMS Aggregator | United Kingdom | Communication |
| Revx Technologies | Managed Service Provider | Europe | Professional Services |
| Route Mobile | SMS Aggregator | India | Communication |
| Sky UK | Virtual Network Operator | United Kingdom | |
| Societe Francaise Du Radiotelephone S.A. (trading as SFR) | Network Operator | France | |
| Spusu Italia | Virtual Network Operator | Italy | |
| Sure (Guernsey) | SMS Aggregator | United Kingdom | Communication |
| SYMA | Virtual SMS Aggregator | Netherlands | Communication |
| Telefonica de Espana S.A.U. (trading as Movistar) | Network Operator | Spain | |
| Telefónica Germany GmbH & Co. OHG | Network Operator | Germany | |
| Telefonica UK Limited (trading as O2) | Network Operator | United Kingdom | |
| Telekom Deutschland | Network Operator | Germany | |
| Telstra | Network Operator | Australia | |
| The Ring Ring Company | Network Operator | Belgium | |
| Three Ireland (Hutchinson) | Network Operator | Ireland | |
| TIM SpA | Network Operator | Italy | |
| TI Sparkle SpA | SMS Aggregator | Italy | Communication |
| TMT Analysis | Network Data Provider | United Kingdom | |
| TPG Telecom | Network Operator | Australia | |
| Twilio Inc (trading as Twilio and Sendgrid) | Email Provider | United States | Communication |
| Tyntec | SMS Aggregator | Germany | Communication |
| Ventatel Limited (trading as Lanck Telecom) | SMS Aggregator | Cyprus | Communication |
| Vodafone | Network Operator | United Kingdom | |
| Vodafone | Network Operator | Germany | |
| Vodafone Enterprise Global | Network Operator | United Kingdom | |
| Vodafone Espana S.A.U | Network Operator | Spain | |
| Vodafone Group | Network Operator | United Kingdom | |
| Vodafone Ireland | Network Operator | United Kingdom | |
| Vodafone Italia S.p.A | Network Operator | Italy | |
| Vonage Business | SMS Aggregator | Europe | Communication |
| Wind Tre S.p.A | Network Operator | Italy | |
| Xfera Moviles S.A.U. (trading as Yoigo) | Network Operator | Spain | |