Twilio Verify API Alternatives (September 2025)

Connect with customers on their preferred channels—anywhere in the world. Quickly integrate powerful communication APIs to start building solutions for SMS and WhatsApp messaging, voice, and email.

Start sending transactional and marketing email in minutes. Easily scale to enterprise-volume with Twilio SendGrid’s Email API. Try it free!

APIs Delivering Global Verification and Programmable Communications as a service. SMS, Voice, and phone number intelligence solutions. Get started now.

Unlock meaningful conversations across the customer journey with programmable SMS, voice, email, video, & verification APIs!

Plivo’s SMS API and Voice API platform enables businesses to communicate with their customers on a global scale. Sign up for free now.

Vonage APIs (formerly Nexmo) offers communications APIs, a global platform and expert support—empowering you to create exceptional customer experiences.

Build your very own omnichannel customer engagement platform with a no-code builder or customize it with Video, Voice, SMS, and chatbot APIs from EnableX.

Trigger thousands of messages in minutes. Integrate seamlessly. Only pay for what you need. Try Brevo's Messaging API for free — no credit card needed.

Marketing Campaigns makes it easy to design, test, optimize and scale email campaigns. Reach the inbox with Twilio SendGrid. Try it free!

Onboard & engage users in 90s with phone identity, verification, OTP & SMS notification. Send reliable voice/SMS OTP with Twillio, MessageBird, Nexmo, Infobip, etc. from 1 API.

Communications API for chat, AI chatbots, SMS, WhatsApp, voice, video, KakaoTalk, and in-app notifications with Sendbird's all-in-one communications API platform.

Quickly integrate passwordless authentication for web and mobile applications to give users a smooth, secure login experience.

Twilio Segment is a customer data platform (CDP) that helps you collect, clean, and activate your customer data.

Powerful Transactional Email APIs that enable you to send, receive, and track emails, built with developers in mind. Learn more today!

Sumsub - Identity verification platform to secure the whole user journey ✔️Verify users, businesses or transactions, all while managing cases and deterring fraud ✔️ Highest pass rates ✔️2000+ clients ✔️Book a free demo now!

Secure and scale your product with Stytch's identity platform. From authentication to fraud protection, we have the APIs and SDKs for your use case.

Experience the world's most flexible age verification & identity verification platform. Deploy multiple methods exactly to your spec.

Sell more w/ a bulk SMS service, email marketing, TTS, 2FA, voice calls & messaging apps integration w/ advanced API communication platform.

World-Class PKI Services, #1 Rated Onboarding Software & RADIUS Services to provide the next-generation of passwordless security.

Vonage offers flexible and scalable voice, messaging, video and data capabilities across Unified Communications, Contact Centers and Communications APIs.

Bandwidth is an enterprise communications platform with voice, messaging, and emergency APIs for your communications stack.

Fight fraud, maintain compliance and onboard online customers faster with Jumio's industry-leading identity verification platform.

AI-powered identity verification platform for end-to-end user onboarding with industry-best pass rates. Combat fraud and ensure compliance. Book a demo now!

Create seamless identity verification & onboarding experiences without making your customers (or staff) jump through hoops.

HYPR's identity security solution empowers you to continuously detect, prevent, and eliminate identity-related risks for your workforce and customers.

Incode offers the world's most advanced identity verification & authentication system. Power a world of trust with simple, secure & fast identity experiences.

Entersekt is how the financial world can finally access one cross-channel platform for secure, frictionless authentication of customers and payments alike.

Convert more B2B customers with our authentication SSO solution. A few lines of code to be SSO-ready, and you can start working with enterprise customers

Create and customize user journeys for any app – from authentication and authorization to MFA and federation. Get set up in minutes with our no-code CIAM platform.

LoginRadius is a customer identity solution that manages user authentication, identity verification, social login, SSO, login security & more.

The modern way of proving identity. Trusted by 1,000+ leading companies to reduce fraud and improve consumer experiences, Prove is the world's most accurate ...

Grow your business with Brevo, the all-in-one platform to manage customer relationships across email, SMS, chat, and more. Get started for free.

MSG91 cloud communications platform integrates cloud-based voice, video, messaging, chat, & collaboration into any app, service, or business process. Request a demo for cloud based communication today!

Advance your app's capabilities: Integrate LinkedIn and WhatsApp for streamlined messaging and improved user experience.

For strong authentication, you need a strong identity. Upgrade identity authentication & Go Passwordless with the 1Kosmos digital identity solution.

Experience seamless communication with MyOperator's call and WhatsApp API solutions. Run Campaigns, Deliver Customer Support, Build Engaging Workflows.

Data Zoo is an online identity service verifying customers instantly and providing global data coverage. Keeping information protected and systems secure.

With cidaas you create one identity across all channels for convenient & secure authentication ►SSO ►2FA ►Social Login ►Identity & access management

Global customer identity verification & fraud prevention for the payments, ecommerce and financial services industries. Trusted by 2,000+ companies worldwide.

With many people opening your messages, boost customer engagement and satisfaction. Send promotional or transactional SMS.

Build real time chat, voice and video calling experience with CometChat's flexible SDKs, APIs & UI Kits. Sign up now!

Communicate with customers via the channel of their choice – SMS, social and integrations. All via our messaging platform for businesses. United States

Engagespot is a notification infrastructure that helps developers build delightful multi-channel communication experiences in their web and mobile apps.

Telnyx offers solutions tailored to your industry needs, from AI to call tracking. Enhance your business capabilities with our specialized solutions.

MailboxValidator email validation clean email lists and reduces bounce. It connects to the mail server and checks whether the mailbox exists or not.

Integrate seamlessly with Netcore's Email API for scalability, high deliverability, & real-time analytics. Designed for developers.

Create dynamic customer engagements driven by valuable data insights. Design omni-channel campaigns on one user-friendly platform, on-cloud or on-site.

Textline's business texting software offers solutions for sales, marketing, customer service and beyond. Utilize the power of SMS to grow quickly.

The easiest way to add authentication and user management to your application. API-first & purpose-built for developers. Get started for free.

Engage your customers and prospects with simple drag and drop email, SMS, chatbot or build custom solutions with the best in class APIs

Strong authentication, without the passwords.

ValidSoft | Voice Biometrics | Protect conversations & data from unauthorized access Verify identity reliably, & easily with a secure friction-free solution

Verify your email list in minutes, or integrate real-time email verification into your app with our API. Over 18 billion emails verified. Get started for free.

Courier is a notification API built for developers. Design once, and deliver to any channel – email, Slack, SMS, push, and more – all through a single API.

Engage your customers and prospects with simple drag and drop email, SMS, chatbot or build custom solutions with the best in class APIs

Onboard companies of any size in just a few lines of code.

Real-time online age verification service compatible with all major ecommerce platforms. Identity verification through public records or photo upload. Age verification plugin and API available.

AI transformation partner for enterprises, driving increased revenue, reduced costs, and enhanced customer experience with Exotel solutions.

Email checker online tool. Ensure email accuracy with our efficient tool. Verify email addresses instantly and improve your communication reliability. Try for free!

Highly automated identity verification for fraud prevention, compliance and safeguarding your customers. Build trust, transparency online and drive more growth.

The powerful email verification tool helps you validate and clean your email list seamlessly, ensuring verified email subscribers and high deliverability.

Create highly personalized, intent-driven experiences that drive more conversions with Acoustic Connect.

Verify/Validate Addresses using PostGrid’s CASS (USPS) and SERP (Canada Post) certified Address validation and verification API and services.

Business communication solutions from net2phone streamline workflows, effortlessly collaborate, and build customer relationships that last.

Improve domain reputation and increase the quality of your mailing list by validating emails before sending a campaign, or at the point of capture.

Knowlarity is a leading cloud business communication solution provider with cloud telephony - virtual number, ivr, toll-free number, call center software, AI products (speech, chatbot and voicebots), video & messaging solutions.

Developer APIs / SDKs for enterprise-ready features like Single Sign-On (SSO/SAML), Passwordless Authentication, Directory Sync (SCIM), Audit Trail (SIEM), and more. Get started for free.

The all-in-one solution for all your business texting needs - marketing campaigns, two-way SMS chats, notifications, and staff communication.

Mailosaur removes the frustration of testing everything a user might do. 
Test password resets, replies, two-factor logins, and more.

The State of Passkey Authentication Live Webinar: Wednesday, June 19 at 2pm ET / 11am PT Register for the webinar PortalGuard IDaaS: Flexible, powerful identity security for employees & customers. Free Trial Contact Us Identity-Bound Biometrics are a great investment. Invest in BIO-key Give us a hand. Try a different way to authenticate with MobileAuth™. Learn

Join the ever growing community of happy, healthy telco operators using PortaOne solutions to be competitive & reduce costs. User-friendly & reliable service.

Ensure communication with customers and suppliers, modernize messaging infrastructures and automate manual business processes thanks to Retarus’ intelligent cloud solutions.

Accurate real-time email validation service: upload and clean your list or integrate email verification into your app with our API. Get started for FREE!

No code user authentication platform for React, Node, Python, Go and Webflow powered websites, with one-click passwordless logins and expert setup help.

Plataforma de Comunicación Omnicanal. Crea una estrategia de comunicación global e integra todos tus canales de comunicación.

Get crystal clear, simple, and reliable for conference calls when they matter most - try OpenVoice today for your audio conferencing solution.

Optimize your digital journey with efficient ad fraud verification, brand protection and eCommerce intelligence solution.

Unlock the power of your communications data. The Nylas communication APIs remove complexity & empower teams to create seamless user experiences.

Discover Echoworx, the industry-leading provider of cutting-edge email encryption to safeguard your sensitive communications

Knowlarity provides the best cloud IVR(Interactive Voice Response) System or solution for your business which is an automated call management solution. Use our top hosted IVR service to respond to all the customer queries professionally with personalized greetings.

Online ID verification service to help any business, from any industry, collect, verify, and manage user identities throughout a customer lifecycle.

Dialpad Ai Meetings is an HD video conferencing platform that lets you meet face-to-face with clients and teammates, from anywhere.

Improve domain reputation and increase the quality of your mailing list by validating emails before sending a campaign, or at the point of capture.

Meet SuprSend, a notification infrastructure to help developers build and manage notifications on all channels - sms, email, push, slack, chat and more - design once and send to all channels with a single API.

Trulioo is the leader in global identity verification providing instant online identity proofing for over 5 billion people in 195+ countries.

CryptoPhoto is an authentication security provider. It's a faster, higher-security replacement for passwords and also replaces 2FA, MFA, OTP, SMS, etc. It also addresses human-factor risks like social-engineering, phishing, malware and scams, and is NIST SP 600-63-3 AAL3 complaint (the highest possible assurance level).

800.com :) Get 800 Toll-Free Numbers and Vanity Phone Numbers provides toll-free and local numbers that can be routed to cell phones or business landlines. We make it easy to forward calls to anywhere in the world.

Best sales engagement platform to get more replies with unlimited inboxes, inbox rotation and multichannel touchpoints including cold emails, LinkedIn, calls to target prospects at the right time.

The cross channel marketing platform that powers unified customer experiences, and empowers you to create, optimize, and measure every customer interaction.

Create trust at onboarding and beyond with an AI-powered digital identity solution. Onfido enables hundreds of businesses to know their customers online.

Power customer-centric interactions between consumers and brands in real-time

GoTo Meeting ensures a quality web conferencing experience by offering the virtual meeting platform features your business needs. Learn more today!

Engage with your customers at scale on digital channels, including private messaging, communities, email, live chat, and voice self-service.

HID DigitalPersona combines security and usability to employ one of the widest arrays of authentication methods and form factors in the industry.

The only secure-by-design Secure Access Platform. Eliminates access risks with SSO, Zero-Trust Identity architecture, phish-resistant MFA, Device Trust and Passwordless capabilities. The secure alternative to Okta, Microsoft Entra, Google MFA, and more.

CrowdPower is a simple automation platform that can onboard new users, reduce churn, keep your customers informed, and so much more.

SalesInbox lets you have all your emails organised, view them with sales contextual information and analyse them for better understanding.

Build a seamless and secure digital experience for your customer using Okta’s customer identity and access management (CIAM) solution.

Rock-solid reputation and a reliable API with endless possibilities for sending your transactional emails.