Best SMS API Providers for Slack

With just a few lines of code, your Node.js package or .Net application can send SMS messages with Notifyre’s SMS API gateway or retrieve a list of SMS replies. Our Twexit feature makes it easy to switch with just a few tweaks code.

Use the language you already love to prototype ideas quickly, develop production-ready communications applications, and run serverless applications on one API-powered platform. Twilio is a single fully-programmable platform with flexible APIs for any channel, built-in intelligence, and global infrastructure to support you at scale. Quickly integrate powerful APIs to start building solutions for SMS and WhatsApp messaging, voice, video, and email. Browse documentation and SDKs in multiple coding languages, including Ruby, Python, PHP, Node.js, java, and C#, or jumpstart your first project with our open source code templates to quickly build production-ready communications apps. Consult our community of over 9 million developers for guidance and inspiration on your next project. Sign up and start building today.

Smarter SMS campaigns, instant OTPs and notifications, as well as two-way interactions and other award-winning bulk SMS service, can increase sales and customer satisfaction. You can personalize bulk SMS messages with names, custom fields, compose in more than 20 languages, schedule/stagger your sends and add an opt-out path. Get best-in-class SMS delivery. Automate sending and receiving SMS from any web page, CRM, or application. Access SMS APIs in 10+ languages, including Java, PHP,.NET & many more. You can easily insert images, videos and PDFs into bulk SMS campaigns. This will help you grab customers' attention. You can convey more information in 160 characters. Text your keywords and long codes to instantly reach your customers. You can set auto-replies and move the conversation on to other channels. Real-time SMS delivery reports and granular click metrics can be used to measure campaign outreach and effectiveness.

ClickSend offers SMS, MMS, Voice, Online Mail, Email and Fax software for businesses. Our communications and messaging tools are simple to use, automate and integrate. That’s why they’re used by some of the most trusted brands, organisations and developers globally. Built for all, you can access ClickSend via our Dashboard, mobile app, flexible API or 900+ integrations. Plus, ClickSend offers helpful 24/7 support, and lightning fast delivery via a secure and reliable platform. From SMS marketing and alerts to bulk mailouts sent from your browser, join over 90,000+ businesses sending communications around the world. Our 100% uptime guarantee and lightning fast direct routes provide reliable messaging, no matter the channel. From small businesses to enterprise, ClickSend powers billions of messages around the world with 232+ direct carrier connections. Plus, ClickSend is always pay-as-you-go. That’s why ClickSend is business communications, solved.

Our online SMS service allows you to send campaigns, schedule messages or track analytics in real-time. Contact functions include multiple list uploading, integrated web forms and replies, global opt out lists, segmentation or staggered messaging. Keywords can be used to trigger an SMS campaign. Keywords can also include UTF-8 special characters from more than 150 languages, or 1,000+ emojis. Send SMS replies to emails or convert email responses into text messages. Conversations can also be sorted by email thread. This app is a quick way to send a text message. Save the link to send SMS in your browser bar so that you can access it from any page without logging into the system. Select a robust SMS API you can trust. Our extensive documentation is designed to help developers deploy rapidly with a variety of HTTP callbacks. Our quick start API documentation will help you deploy SMS quickly.

Conversations are the best way to create customer journeys. Engaging experiences that move customers. Developers love it. Built for business. Vonage Communications APIs (formerly Nexmo), help growing startups and agile businesses improve their customer experience and realize new business results at scale. Our APIs, global platform and expert support make it easy to simplify communications and innovate faster. Voice interactions can be reimagined to transform customer experiences. Every message should be viewed as an opportunity for you and your customers. Secure and private logins are made easier with this tool. Cloud-based voice applications that are modern and high-quality. You can programatically send and get SMS from almost every country. Get real-time information on any phone number around the globe. You can make and receive calls using your existing VoIP infrastructure.

You can add real-time voice, video and messaging to your VoIP, web and mobile services. No CapEx. No contracts. You only pay as you grow. You have complete freedom to create what you want. Apidaze Voice APIs make it easy to manage inbound and outbound calls. You don't need to have complicated phone systems or make commitments with large carriers. Apidaze allows you to access phone numbers in more that 8,000 cities across 60 countries. You can create simple IVRs without a phone system. Play a welcome message and route the call to different people based on the caller's input. With over 6,000,000,000 SMS being sent every day in the US, SMS is quickly becoming an important communication medium for keeping in touch with customers.