iMessage API: The Business Buyer's Guide to Blue-Bubble Outreach
The short answer
An iMessage API sends blue-bubble texts from your software. Your system POSTs a message, it lands in the recipient's Messages app, replies come back via webhooks. Apple publishes no public iMessage API, so every option is third-party. The real buying question is infrastructure: whose line is it, what's the line health, who owns it. Blue Reacher gives you the API plus a dedicated line that's yours alone, never pooled, never recycled, with the campaign layer that turns replies into revenue.
Key takeaways
- AI assistants and agents can use the MCP server for sending, threads, contacts, and availability checking without integration code.
- Four primitives. It sends outbound messages and receives inbound replies.
- Endpoints live under https://api.bluereacher.com/v1/.
- Both sides send blue bubbles. The difference is how much of the workflow arrives assembled.
- Developers needing messaging infrastructure should buy a raw API.
- Yes, under TCPA rules: iMessage skips A2P 10DLC registration, but consent and opt-out rules match SMS.
Building with AI agents?
AI assistants and agents can use the MCP server for sending, threads, contacts, and availability checking without integration code.
- See the developer API page for the quickstart, every endpoint, and webhook payloads.
What does an iMessage API actually do?
Four primitives. It sends outbound messages and receives inbound replies. It checks whether a number can receive iMessage before you send. And it pushes events into your systems in real time.
- Sending: text, images, video, voice memos, and group threads. Typing indicators and read receipts make the conversation read like a person typing, not a broadcast blast.
- Receiving: replies hit your webhook endpoint within seconds, so a rep can call a warm lead while the message is still on screen.
- Availability checking: query a number and find out if it's iMessage-capable before you send. Numbers that aren't get RCS, and if RCS isn't there, SMS.
- Delivery states: sent, delivered, read, failed, per message. Not a nightly aggregate you have to reconcile by hand.
- STOP auto-detection: opt-out keywords caught and suppressed at the platform level instead of in a spreadsheet someone forgets to update.
Build vs buy: what a raw API leaves on your plate
A raw API gives send and webhook. Everything else is yours: contact lists, sequencing, opt-outs, CRM sync, reporting. That's four to eight weeks of developer time, then ongoing maintenance.
- Pick the right fit: building a product that texts its users? Raw API is correct. Running a sales team where meetings booked is your metric? Paying a developer to rebuild a campaign tool is the expensive path.
How the Blue Reacher API works
Endpoints live under https://api.bluereacher.com/v1/. Send a bearer token (brk_*) in Authorization. POST to /v1/messages; replies and opt-outs arrive at your webhook as POSTs.
- Reply payloads are signed message.received events with phone_number, content, service_type and a message_id. The hosted MCP server lets AI agents read and write threads.
- GoHighLevel is native; others use REST API and webhooks. Docs at docs.bluereacher.com.
Reading how it works is not the same as watching it answer one of your own leads. The Blue Funnel Map does the second one.
See it on your own listRaw API vendors vs the Blue Reacher platform
Raw API vendors vs the Blue Reacher platform
Both sides send blue bubbles. The difference is how much of the workflow arrives assembled. Pricing below reflects vendor pricing pages.
Send and receive iMessage
- Raw iMessage API vendors
- Yes
- Blue Reacher
- Yes
Webhooks and delivery states
- Raw iMessage API vendors
- Yes
- Blue Reacher
- Yes
iMessage availability checking
- Raw iMessage API vendors
- Usually
- Blue Reacher
- Yes
RCS then SMS fallback
- Raw iMessage API vendors
- Varies by vendor
- Blue Reacher
- Included
Campaign sequencing, throttling, scheduled sends
- Raw iMessage API vendors
- You build it
- Blue Reacher
- Included
STOP detection and suppression
- Raw iMessage API vendors
- You build it
- Blue Reacher
- Automatic
CRM sync
- Raw iMessage API vendors
- You build it
- Blue Reacher
- Native GoHighLevel, API and webhooks for the rest
Lead data
- Raw iMessage API vendors
- You source it
- Blue Reacher
- $0.03/contact, 700M+ B2B database, billed monthly with the line
Line setup
- Raw iMessage API vendors
- Self-serve, you own the config
- Blue Reacher
- White-glove, managed for you
A2P registration for the iMessage path
- Raw iMessage API vendors
- N/A on iMessage, required on SMS paths
- Blue Reacher
- No A2P registration required
Published price
- Raw iMessage API vendors
- Blooio from $39/mo shared, Sendblue $100/line/mo on its AI Agent plan with true outbound quote-only
- Blue Reacher
- $249/line/mo or $1,949/line/yr, unlimited iMessages per line, up to 50 opted-in / 30 cold new conversations per line per day
Which one should you pick?
Which one should you pick?
Developers needing messaging infrastructure should buy a raw API. Sendblue and Blooio publish clean docs and sane pricing; you get a send endpoint and a bill that scales with lines.
- Blue Reacher: $249/mo or $1,949/yr (about $162.50/mo), unlimited iMessages at 50 opted-in / 30 cold/day, RCS then SMS fallback, $449 activation waived annually.
- Sales leaders buy managed platforms. Teams close 2-3x more deals from paid leads.
Is outbound iMessage compliant?
Is outbound iMessage compliant?
Yes, under TCPA rules: iMessage skips A2P 10DLC registration, but consent and opt-out rules match SMS. This isn't legal advice; counsel before scaling.
- Consent revocation (April 11, 2025): stop, revoke, end count automatically. Honor within ten days. Cross-channel revocation extends to January 31, 2027; treat stops as global default.
Frequently asked questions
Is there an official Apple iMessage API?
Apple's Messages for Business is restricted to approved Messaging Service Providers for customer support only, not general outbound. Business Updates allow only approved high-utility conversational cases, not broadcast. All general-purpose iMessage platforms, Blue Reacher included, are third-party.
What does an iMessage API cost in 2026?
Pricing ranges from $39/mo shared to $1,000+/mo per line. Blooio offers $39/mo shared plans; Sendblue's reply-only AI Agent is $100/line/mo. Blue Reacher: $249/mo or $1,949/yr per line, unlimited iMessages paced 50 opted-in / 30 cold daily, activation waived annual.
Do I need A2P 10DLC registration to send iMessage?
No A2P registration required for iMessage. On SMS fallback, The Campaign Registry charges $4.50 brand registration, $41.50 vetting, $15 per campaign, plus carrier surcharges, with reviews running 10-15 days. If your fallback traffic uses SMS, those requirements apply to that traffic.
Does my lead need an iPhone to get a blue bubble?
Yes, blue bubbles are Apple to Apple. Availability checking queries the number first to confirm it's iMessage-capable before you send. Numbers that aren't get RCS, then SMS. About 60% of US mobile users are on iPhone, so most B2B lists land mostly blue. The channel field on every webhook tells you what happened.
Can I connect this to my CRM without a developer?
GoHighLevel: native integration, messages send from workflows, replies write to records, no code. HubSpot, Salesforce, Close, or custom: API/webhooks connect via ops team, usually an afternoon. Line setup is white-glove managed either way.
Get the API and the closed deals it exists for
You paid for the lead; the channel is why they never replied. Book your Blue Funnel Map and we'll show you the API, the campaign layer and what your list looks like on the availability check.