Sinch

Reach customers across messaging channels worldwide through one API integration, helping businesses scale communications and manage customer conversations.

Send and manage transactional and marketing email with scalable infrastructure, dependable uptime, and tools to monitor and improve deliverability.

Add flexible voice calling to apps and workflows, automate call handling, and gain real-time visibility into calls.

Secure user accounts and streamline sign-up, login, and password resets with flexible verification options delivered through one API.

Choose and manage business numbers for customer communications, with options for messaging, voice, and customer access.

Reach customers across mobile channels, automate timely communications, and manage conversations and campaign performance in one platform.

Create and optimize email campaigns at any scale while helping teams collaborate and protect deliverability.

Engage and connect with customers around the clock across multiple channels using smart chatbots and voice bots.

Deliver consistent customer service across channels, connect with existing CRM systems, and reduce contact center operating costs.

Manage Sinch communications APIs from one developer dashboard, simplifying access to messaging, voice, verification, and other services.

Connect AI agents with customers across communication channels using global infrastructure designed for reliable, scalable, and protected interactions.

Connect phone systems to the PSTN with flexible service models, scalable capacity, global reach, and pricing options to fit business needs.

Help partners strengthen brand recognition, retain loyal customers, attract new ones, and grow revenue with branded communications.

Developer-focused APIs for programmable voice, messaging, video, identity, and verification to embed communications into applications.

Products: Messaging APIs, Email API, Voice API, Verification API, Business Phone Numbers, Sinch Build, Private label cloud communications, Sinch AI communications solution

Scalable SIP trunking and voice connectivity services that provide PSTN termination, call routing, call data analytics, and self-service capacity management.

Products: Sinch SIP Trunking, Business Phone Numbers

Orchestration and execution of coordinated campaigns across email, SMS, WhatsApp, mobile, web, and ad networks with integrations to partner channels.

Products: Sinch Engage, Sinch Mailjet Email Marketing Platform

Cloud-native contact center capabilities for digital-first, AI-powered customer service delivering omnichannel routing, agent and supervisor support, and analytics.

Products: Contact Pro

Capabilities that provide natural-language conversational interfaces and agents with text, voice, and video modalities, personalization, and action-taking for end users and businesses.

Products: Chatlayer, Sinch AI communications solution

Messaging APIs

Sinch Messaging APIs let businesses send messages through SMS, MMS, WhatsApp, RCS, Facebook Messenger, and other global and regional channels using a unified API. The Conversation API connects to 13 popular messaging channels through a single integration and supports one-way and two-way conversations. Built on Sinch’s global carrier network, the APIs support messaging at scale across more than 190 countries, with reliability, reach, and deliverability for business communications.

• Reach Customers Across Messaging Channels
  Connect with customers on the channels they use, including SMS, MMS, WhatsApp, RCS, Facebook Messenger, and regional messaging apps.
• Connect Multiple Channels With One API
  Build a messaging setup through one integration rather than separate channel connections, simplifying channel management and reducing the need for multiple providers.
• Reach Customers In More Than 190 Countries
  Expand messaging beyond local markets with coverage across more than 190 countries using Sinch’s global carrier network.
• Deliver Messages Reliably At Scale
  Use carrier-network infrastructure designed to support dependable message delivery and high-volume communications across messaging channels.
• Manage Conversations From One Place
  Bring messaging channels together to send, receive, and manage rich conversations without stitching together separate providers.
• Support One-Way And Two-Way Conversations
  Communicate with customers through one-way messages and two-way conversations across connected messaging channels.
• Add Messaging Channels More Quickly
  Expand channel coverage in minutes or days rather than months, while reducing the upfront work and ongoing maintenance involved in managing multiple integrations.
• Create More Engaging Customer Interactions
  Send personalized, interactive messages across supported channels to engage customers and support conversion-focused communications.

Email API

Sinch Mailgun’s reliable, scalable email API helps businesses send transactional and marketing emails, receive and track email, and optimize email efforts. It offers enterprise-grade speed, real-time deliverability insights, deliverability tools and services, and 99.99% uptime.

• Send Transactional And Marketing Emails
  Use the API to send both transactional and marketing emails.
• Monitor Real-Time Email Deliverability
  Use real-time deliverability insights and a suite of tools and services to monitor and support email delivery.
• Maintain 99.99% Uptime
  The stated 99.99% uptime supports dependable availability for email operations.
• Send Emails At Enterprise Speed
  Enterprise-grade speed helps businesses send email through the API.
• Scale Email Operations
  Use scalable email infrastructure to support growing business email needs.
• Track Email Activity
  Track email activity to support oversight of email operations.
• Optimize Email Efforts
  Use the API’s email capabilities to optimize email efforts.
• Receive Business Emails
  Receive email through the API alongside sending and managing email efforts.

Voice API

Sinch Voice API gives developers global phone numbers, flexible APIs, and SDKs to add outbound, inbound, and in-app calling to their apps. REST APIs, SIP integration, and webhooks support custom voice workflows without legacy hardware. Features include programmable call flows, automated call handling, real-time call events and analytics, call recording, and conferencing.

• Automate Outbound Customer Calls
  Send automated notifications and alerts, run high-volume outbound campaigns, and connect customers with agents through API-initiated calls.
• Route Inbound Calls To The Right Destination
  Build programmable menus that use keypad input or speech recognition to direct callers to the appropriate app, agent, team, or contact center.
• Integrate Voice Into Existing Applications
  Use REST APIs, SIP, webhooks, and language SDKs to configure calls and connect voice capabilities with applications and business systems.
• Enable Calling Directly Within Apps
  Add calling to applications and let customers initiate two-way calls directly from an app.
• Automate Calls And Detect Voicemail
  Generate natural-sounding speech for automated calls and use answering machine detection to identify voicemail during outreach.
• Reach Customers With Global Phone Numbers
  Choose from local, toll-free, and other phone number types across more than 90 countries and 16,000 cities.
• Sync Call Events Across Business Systems
  Use live webhooks and JSON callbacks to make call events available to connected business systems as they occur.
• Scale Voice Calls As Needs Grow
  Support high-volume calling, including millions of calls daily, and request advanced features when needed.
• Monitor Calls And Analyze Performance
  Review call records and logs, export data for analytics and compliance, and use real-time streams to support call and sentiment analysis.
• Record Calls For Quality And Training
  Capture calls for quality optimization and training, with the option to use Google, Amazon, or Microsoft Azure cloud storage.
• Connect Multiple Participants On Calls
  Bring multiple participants together through voice conferencing.

Verification API

Sinch Verification API helps businesses enhance app security with scalable authentication solutions designed to keep customer interactions flowing. A single API supports verification options including SMS, phone calls, one-time passcodes, password-free phone number verification, and one-factor authentication. It helps secure sign-up, login, and password reset flows, reduce unauthorized payments and account takeovers, and verify users across devices and platforms in multiple languages.

• Strengthen Account Security With Scalable Authentication
  Use scalable multi-factor authentication to enhance app security through one API, without making security and conversions competing priorities.
• Reduce Fraud And Account Takeovers
  Verification is designed to help reduce fraud, unauthorized payments, and account takeovers while preserving a smooth user experience.
• Verify Users Through SMS
  Offer SMS verification as a channel for confirming users during account and app interactions.
• Verify Users Through Phone Calls
  Use phone calls as a verification option to confirm users during account and app interactions.
• Simplify Access With One-Time Passcodes
  Use OTPs to support smooth sign-up, login, and password reset experiences.
• Enable Password-Free Phone Verification
  Let users verify with their phone number without a password, supporting easier sign-up, login, and password reset experiences.
• Verify Users Across Devices And Platforms
  Support verification across devices and platforms, with multiple languages, to serve users in different usage contexts.
• Streamline Access With One-Factor Authentication
  Use one-factor authentication to make sign-up, login, and password resets straightforward for users.
• Maintain Verification With Efficient Fallback
  Use efficient fallback options within the verification experience when needed; the page does not specify which methods are used.

Business Phone Numbers

Sinch provides virtual business phone numbers, including long codes, short codes, and toll-free numbers. Businesses can choose from local, toll-free, and international numbers, purchase and manage number inventory through APIs or an online portal, and port existing numbers with support from dedicated specialists. Numbers can be used with Sinch communication services, including SMS, MMS, and voice. Depending on the market and use case, businesses can choose dedicated or shared numbers and vanity codes. Each phone number includes CNAM, directory listings, emergency calling capabilities, and support.

• Choose From 160M+ Numbers
  Select from a large inventory of number types and regions to find numbers suited to your business communications.
• Manage Numbers Through APIs Or Portal
  Use APIs or the portal to manage number inventory, select numbers, and activate services.
• Port Numbers With Minimal Downtime
  Move existing numbers to Sinch with help from dedicated specialists and minimal downtime.
• Send SMS And MMS
  Use numbers with Sinch services to deliver SMS and MMS communications to customers.
• Enable Voice Services
  Use business phone numbers with Sinch voice services and manage number activation through portals or APIs.
• Select Numbers For Your Use Case
  Choose dedicated or shared numbers where available, or use vanity codes to offer customers another way to contact your business.
• Include Emergency Calling
  Emergency calling capabilities are included with each phone number.
• Include CNAM
  CNAM is included with each phone number.
• Include Directory Listings
  Directory listings are included with each phone number.
• Get Number Support
  Support is included as part of the phone number offering.

Sinch Engage

Sinch Engage is a secure, multi-channel messaging platform for business-to-customer engagement. Teams can create and personalize campaigns, schedule messages and automated notifications, and manage customer replies across SMS, MMS, RCS, and WhatsApp. It supports integrations with business tools such as HubSpot, Salesforce, NetSuite, Shopify, and Zoho, and includes campaign analytics, team collaboration, and compliance features.

• Reach Customers Across Mobile Channels
  Use multiple mobile messaging channels to send campaigns and communicate with customers without managing separate messaging tools.
• Automate Timely Customer Communications
  Trigger and schedule messages from connected business workflows to send reminders, updates, and follow-ups at relevant points in the customer journey.
• Manage Customer Replies In One Inbox
  Keep conversations accessible to the team in one place, assign them to the right team members, and respond using templates for common questions.
• Connect Messaging To Existing Business Tools
  Link messaging with CRM, ecommerce, and other business platforms to use connected data and workflows for campaigns and customer communications.
• Create Campaigns Without Technical Expertise
  Build and send campaigns using templates and personalization options, with no technical expertise required.
• Personalize Messages For Customer Segments
  Use contact properties, customer lists, and audience segments to tailor messages and target the customers most relevant to a campaign.
• Measure Messaging Campaign Performance
  Review delivery and engagement metrics to monitor campaigns and, in supported integrations, assess abandoned-cart outcomes and reported return on investment.
• Support Compliant Customer Messaging
  Use automated opt-out reporting and the compliance measures described for supported integrations to help manage messaging requirements.
• Deliver Messages Across Global Networks
  Use Sinch's stated global SMS coverage and direct carrier connections to send messages across markets with reliable delivery.
• Build Trust With Dedicated Business Numbers
  Choose a business number type that gives communications a consistent sender identity, with provisioning and carrier registration support described for the Shopify integration.
• Review AI-Drafted Messages Before Sending
  Use the Sinch Send SMS action with HubSpot Breeze agents to draft CRM-personalized messages and check opt-out status, then review and approve the message before it is sent.
• Send Branded Interactive RCS Messages
  Use verified sender profiles and rich RCS cards, including product data through the Shopify integration, to provide customers with more interactive messages.
• Coordinate Teams With Custom Access
  Give team members and departments access to collaborate while applying custom permissions and access controls.
• Get Support Around The Clock
  Access live chat and email support at any time, as described on the Sinch Engage site.

Sinch Mailjet Email Marketing Platform

Sinch Mailjet is an email marketing platform built for developers and marketers. It helps teams create, send, and optimize campaigns at any scale, collaborate on campaign workflows, and protect email deliverability. The platform is designed to scale with business needs and offers enterprise-grade compliance.

• Send Campaigns At Any Scale
  Create, send, and optimize campaigns for audiences ranging from tens of thousands to millions, with a platform designed to scale with business needs.
• Protect Email Deliverability
  Mailjet is designed to protect deliverability and help messages land in recipients’ inboxes.
• Send And Track Campaigns
  Send email campaigns and track their performance through campaign tracking.
• Scale Compliance With Your Business
  Rely on enterprise-grade compliance designed to scale as business needs grow.
• Automate Email Marketing
  Use built-in automation to support email marketing workflows.
• Coordinate Team Campaign Work
  Bring team members together to collaborate on email marketing workflows.
• Scale Contact Lists Without Added List Fees
  Send to larger contact lists, from tens of thousands to millions, without paying more based on list size.
• Compare Campaign Variations
  Test campaign variations as part of email workflows to assess how they perform.
• Build Email Campaigns Visually
  Design email campaigns with a drag-and-drop builder.

Chatlayer

Chatlayer is a chatbot and voice bot platform for engaging and connecting with customers 24/7 across multiple channels. Its chatbots can be built without coding skills.

• Connect With Customers Across Channels
  Reach customers across multiple channels using chatbot and voice bot interactions.
• Engage Customers Around The Clock
  Keep customer conversations available 24/7 through Chatlayer bots.
• Build Bots Without Coding
  Create and set up chatbots without coding skills.

Contact Pro

Contact Pro is an omnichannel contact center solution that brings calls, emails, web chat, video, SMS, and messaging apps together in one place. It helps businesses provide consistent customer service across channels, integrates with third-party CRM systems including Salesforce, ServiceNow, and SAP, and can reduce costs by eliminating in-house infrastructure, integration, and IT support expenses.

• Serve Customers Across Their Preferred Channels
  Bring calls, email, web chat, video, SMS, and messaging apps into one solution so customers can contact your team through the channels they use.
• Manage Conversations In One Place
  Give teams one place to handle calls, emails, web chat, video, SMS, and messaging apps instead of separating these interactions across channels.
• Connect Contact Center Workflows With CRM Systems
  Connect Contact Pro with existing CRM systems, including Salesforce, ServiceNow, and SAP products, to support customer service within existing technology environments.
• Reduce Infrastructure And Support Expenses
  Reduce operational costs by eliminating the need for in-house infrastructure, integration, and IT support expenses.
• Use An SAP-Endorsed Contact Center Solution
  Choose a contact center solution that Sinch identifies as the only SAP-endorsed option.

Sinch Build

Sinch Build is a developer-focused dashboard for managing Sinch communications APIs from one console. It brings together Messaging APIs—including SMS, RCS, WhatsApp, and MMS—along with Voice, Verification, Numbers, SIP trunking, and Fax. The dashboard consolidates the communications API stack, including OAuth identity, access keys, and the API surface.

• Manage All Sinch APIs In One Place
  Use one dedicated console to manage Sinch APIs across communications services, helping simplify API operations.
• Access Multiple Communication API Services
  Work with messaging, voice, verification, number, SIP trunking, and fax capabilities through the Sinch Build dashboard.
• Consolidate API Access Components
  Bring OAuth identity, access keys, and the API surface together within the consolidated Sinch communications API stack.

Sinch AI communications solution

Sinch’s AI communications solution connects AI agents with customers through messaging, voice, and email. It combines global communications infrastructure, an open agentic platform, and ready-to-use applications, with systems of action and systems of record connected in one place. Its infrastructure supports carrier-grade routing, deliverability, and scale, with built-in compliance, identity, and fraud protection.

• Connect Agents Across Channels
  Reach customers through messaging, voice, and email using Sinch’s communication capabilities.
• Scale Customer Communications Globally
  Use Sinch’s global network and carrier-grade routing to support communications at scale.
• Protect Communications And Identity
  Use built-in compliance, identity, and fraud protection to support customer communications.
• Connect Enterprise Systems And Workflows
  Bring communication capabilities into enterprise systems and workflows, with systems of action and record connected in one place.
• Use Channel Intelligence
  Apply channel intelligence across messaging, voice, and email.
• Handle Customer Conversations
  Support AI agents in handling customer conversations.
• Maintain Customer Context
  Give AI agents real-time identity, intent, and journey context with persistent memory.

Sinch SIP Trunking

Sinch SIP trunking connects business phone systems to the public switched telephone network (PSTN), replacing traditional phone lines. Customers can choose Elastic SIP Trunking for direct PSTN access or bring their own carrier for supported cloud platforms. Service options include self-service and managed models, with different SLAs and pricing structures. Sinch provides global Tier-1 network connectivity, number porting, security and compliance capabilities, interoperability with leading voice platforms, and real-time call quality analytics.

• Connect Phone Systems To The PSTN
  Link business phone systems to the public telephone network through Sinch SIP trunking, replacing traditional phone lines.
• Choose The Service Model That Fits
  Select managed service with a 99.999% SLA or self-service with a 99.95% SLA, matching the service level to business needs.
• Reach Global Markets Through One Provider
  Use one provider for voice connectivity across more than 60 countries, with 600+ operator interconnects and U.S. number coverage for 95%+ of the population.
• Scale Voice Capacity As Needed
  Increase capacity as business requirements change, including for growth, seasonal spikes, and campaigns.
• Match Pricing To Your Usage
  Choose usage-based Elastic SIP pricing or Enterprise SIP committed and metered plans, including tiered commitments for budget planning.
• Secure Calls With Encryption And Access Controls
  Protect calls with TLS/SRTP encryption and IP ACLs, which the page describes as securing every call by default.
• Meet Voice Compliance Requirements
  Use integrated support for STIR/SHAKEN and E911, including Kari’s Law and the RAY BAUM’S Act; the page also lists HIPAA and GDPR support.
• Keep Your Existing Carrier
  Use a supported cloud integration with your existing carrier while bringing PSTN connectivity to UCaaS, CCaaS, or custom applications.
• Connect With Leading Voice Platforms
  Integrate with leading IP-PBX, SBC, UCaaS, and CCaaS platforms, with BYOC available for supported cloud integrations.
• Monitor And Troubleshoot Call Quality
  Use real-time CDRs and MOS scores to review calls, troubleshoot issues, and keep call quality high.
• Keep Existing Business Numbers
  Port existing business numbers in either SIP trunking service model rather than changing numbers when moving to the service.

Private label cloud communications

Sinch’s private label cloud communications solution lets partners offer communication services under their own brand. A branded customer experience helps partners keep their brand top of mind, expand their business, and enhance recognition. An intuitive portal makes it easy to manage the services, leaving partners free to focus on growing revenue.

• Deliver A Fully Branded Experience
  Partners can provide a branded customer experience that keeps their brand top of mind and helps enhance recognition.
• Manage Services Through An Intuitive Portal
  The portal gives partners a straightforward way to manage their communications services while focusing on their business.