SendBlue – The Agent-First Messaging Platform

Sendblue, an agent-first messaging platform, enables businesses to send iMessages from real phone numbers with automatic fallback to RCS and SMS, achieving 99.9% uptime and sub-two-second average delivery. The platform is SOC 2 Type II and HIPAA compliant, used by thousands of businesses including publicly traded companies, and offers flat-rate pricing per line with no per-message fees.

Build workflows that get your reps replied to. Native blue bubbles, AI-assisted follow-ups, and a shared inbox: the operating system for modern sales teams. An assistant that books flights, replies to inboxes, runs errands. Over the channel users actually check. POST .That's because email and SMS were built for alerts, not relationships The foundation. Increase response rates, build engagement, and lift lifetime value. The voice layer. Reach customers with the most trusted channel. Efficiency at the intersection of automation and personalization. Organize and connect with the right people faster. Our expert frameworks, strategic account managers, and vertical-specific insights. White glove service found nowhere else in market. Stop looking like a bot 🤖 while remaining compliant. Team up with contacts and other team members. Save 2-3 weeks on a lengthy A2P registration process and start messaging immediately. Skip the 🥔 quality pics and send voice memos, videos, and high res photos. Flat monthly pricing based on phone lines. No hidden carrier fees or additional message segment costs. Custom-built connections across CRMs and automation tools keep Sendblue at the center of your workflow. Our Click-to-Dial Chrome Extension makes it easy to call, text, and track from even the most niche systems. We will fall back and fulfill the message with RCS then SMS if RCS is not available from the same phone number at no additional charge. Yes You can call your contacts and even FaceTime them from the same iMessage phone number that you're texting them from. No. We do not support message blasts as they are commonly used for spam and damage the reputation of iMessage. Yes we support voice memos and any other file type you can send via iPhone mp3, mp4, etc. Yes. We can port over any number and enable it with iMessage. Please note it requires an additional 3-5 days for set up. We allow our users to send unlimited texts to their contacts. However, we do have a limits on contacts messaged per day per phone line to prevent spam. Additional phone lines can be purchased to raise the limit. With our zero spam technology built-in and strict security controls, we are SOC 2 Type 2 and HIPAA compliant. Five years in production, 99.9% uptime, sub-two-second average delivery, SOC 2 Type II certified. Built to carry the messages that move money. Real blue bubbles from real phone numbers. Automatic fallback to RCS, then SMS. No A2P registration. Thousands of businesses run on Sendblue, including publicly traded companies. Millions of messages delivered reliably. SOC 2 Type II certified. HIPAA support. End-to-end encryption. Enterprise BAAs available. Integrate iMessage into your app with just a few lines of code. Our SDKs handle authentication, delivery, and fallback automatically. python import SendblueAPI from 'sendblue'; const client = new SendblueAPI { apiKey: 'API KEY', apiSecret: 'API SECRET' } ; await client.messages.send { number: '+19998887777', from number: '+18887776666', content: 'Hello from Sendblue ' } ; python from sendblue api import SendblueAPI client = SendblueAPI api key='API KEY', api secret='API SECRET' client.messages.send number='+19998887777', from number='+18887776666', content='Hello from Sendblue ' curl -X POST https://api.sendblue.co/api/send-message \ -H "sb-api-key-id: API KEY" \ -H "sb-api-secret-key: API SECRET" \ -H "Content-Type: application/json" \ -d '{"number":"+19998887777","content":"Hello from Sendblue "}' Install the Sendblue CLI npm install -g @sendblue/cli Send an iMessage in one command sendblue send "+19998887777" "Hello from Sendblue " { "id": "msg aB3xK9d2", "status": "DELIVERED", "service": "iMessage", "number": "+19998887777" } Flat-rate pricing per line. No per-message fees, no hidden costs. Test the full API in a sandbox environment. No credit card required. For production inbound messaging at scale. For outbound teams and high-volume deployments. See how Sendblue stacks up against other messaging solutions. | Feature | Sendblue | Linq | BlueBubbles | Twilio | Apple Messages | |---|---|---|---|---|---| | iMessage | ✓ | ✓ | Requires Mac | ✗ | Biz chat only | | REST API | ✓ | ✓ | ✓ | ✓ | Limited | | SMS/RCS fallback | Auto | ✓ | Partial | SMS only | ✗ | | Contact cards vCard via API | ✓ | ✓ | ✗ | ✗ | ✗ | | FaceTime Audio via API | ✓ | ✗ | ✗ | ✗ | ✗ | | Pricing | From $100/line/mo | Everything you need to know about the Sendblue iMessage API. /send-message endpoint with the recipient's phone number and your content. Messages deliver as real iMessages with blue bubbles.Get an API key in 30 seconds. No credit card.