Reach customers at scale with 98% open rates. Calculate how many numbers you need, then follow the setup guide below.
Balanced risk and volume
Not all messaging channels are created equal. Here's how they compare for business outreach.
Spam folders, promotions tab, low engagement
10DLC registration, carrier filtering, declining trust
Apple ecosystem only (but 60%+ US market share)
Apple doesn't offer a bulk iMessage API. Blooio bridges the gap with cloud infrastructure purpose-built for iMessage at scale.
Blooio runs iMessage-capable Mac infrastructure in the cloud. You never need to own or maintain hardware — just call the API.
Messages are distributed across multiple Apple ID-linked phone numbers. This keeps per-number send rates within safe limits and maximizes deliverability.
Send messages, receive delivery status, and handle replies programmatically. Integrate with any language, CRM, or automation platform.
From account creation to your first campaign in four steps.
Sign up at app.blooio.com. You'll get an API key and access to iMessage-enabled phone numbers within minutes. No Apple developer account required.
Each number should send 20–50 new conversations per day. 20/day is conservative and safest for long-term deliverability; 50/day is the upper end and carries more risk. Figure out how many leads you want to reach daily, then divide by your target rate to get the number of lines you need. For example: 200 leads/day ÷ 40/number = 5 numbers. Blooio rotates messages across your pool automatically.
Import contacts via CSV, connect your CRM (HighLevel, HubSpot), or push contacts through the API. Blooio validates phone numbers and checks iMessage eligibility automatically.
Use the Blooio API to send messages with built-in rate control. Here's a quick example:
// Send bulk iMessages with rate limiting
const BASE = "https://backend.blooio.com/v2/api";
const API_KEY = "YOUR_BLOOIO_API_KEY";
const DELAY_MS = 3000; // 3s between messages
const contacts = [
{ phone: "+15551234567", name: "Sarah" },
{ phone: "+15559876543", name: "Mike" },
{ phone: "+15554567890", name: "Alex" },
// ... your contact list
];
async function sendBulkMessages(contacts, template) {
for (const contact of contacts) {
const text = template.replace("{{name}}", contact.name);
const chatId = encodeURIComponent(contact.phone);
await fetch(`${BASE}/chats/${chatId}/messages`, {
method: "POST",
headers: {
"Authorization": `Bearer ${API_KEY}`,
"Content-Type": "application/json",
},
body: JSON.stringify({ text }),
});
// Respect rate limits
await new Promise((r) => setTimeout(r, DELAY_MS));
}
}
sendBulkMessages(
contacts,
"Hey {{name}}! Quick question — are you still interested in the demo we discussed? Reply YES to schedule."
);Bulk messaging only works when you respect recipients. Follow these rules to maintain high deliverability and stay compliant.
iMessage is person-to-person (P2P), not application-to-person (A2P), so carrier regulations like 10DLC don't apply. However, you must still comply with the TCPA, CAN-SPAM, GDPR, and any local jurisdiction laws that govern electronic messaging and consent.
Don't blast 10,000 messages in one minute. Space messages out (2–5 seconds apart) and let number pools distribute the load. Blooio's API handles this automatically when configured.
Use the recipient's name, reference previous interactions, and provide genuine value. Personalized iMessages see 3–5x higher response rates than generic blasts.
Don't send spam, phishing, or illegal content. Apple can disable iMessage for numbers that generate excessive complaints. Quality over quantity always wins.
Bulk iMessage unlocks high-engagement outreach that email and SMS can't match.
Product launches, flash sales, limited-time offers. 98% of recipients will actually see your message — compared to 20% for email.
Reduce no-shows by 60%+ with iMessage reminders. Rich media lets you include calendar links, maps, and prep instructions.
Send event invites with RSVP links, venue details, and updates. Track who opened and who replied — all in real time.
Build hype with a tiered rollout — VIP early access, then general availability. iMessage reactions let you gauge excitement instantly.
Win back churned users with personalized offers. iMessage's intimate, personal channel feels like a text from a friend, not a marketing blast.
Quick one-question surveys get 40%+ response rates over iMessage. Collect NPS scores, product feedback, or satisfaction ratings.
Blooio connects to the tools you already use — no custom infrastructure required.
Connect with GoHighLevel, HubSpot, or Salesforce. Sync contacts, trigger campaigns based on pipeline stages, and log all iMessage conversations back to your CRM.
Build visual workflows with n8n, Make, or Zapier. Trigger bulk sends from form submissions, payment events, or calendar bookings — no code required.
Full REST API with webhooks for delivery receipts, read status, and inbound replies. Build any integration in any language — Python, Node.js, Go, or curl.
Yes, as long as you have prior consent from recipients, include an opt-out mechanism, and comply with TCPA and CAN-SPAM regulations. Blooio provides tools for consent tracking and opt-out management to keep your campaigns compliant.
We recommend 20–50 new conversations per number per day. 20/day is conservative and best for long-term deliverability; 50/day is the aggressive end and carries more risk. To calculate: divide your daily lead target by your per-number rate. For example, 300 leads/day at 30/number = 10 numbers. Blooio distributes messages across your pool automatically.
A number pool is a set of Apple ID-linked phone numbers that rotate as senders. Instead of blasting all messages from one number (which risks rate-limiting), Blooio distributes outbound messages across the pool. This keeps each number's send rate within safe limits and maximizes deliverability.
iMessages are delivered over Apple's encrypted network, not carrier SMS infrastructure. This means no 10DLC registration, no carrier filtering, and 98% open rates compared to SMS's declining 45-55%. iMessages also support read receipts, reactions, and rich media natively.
Start your free trial and launch your first bulk iMessage campaign today. No credit card required.
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