Sendblue vs MessageBird (Bird): iMessage API vs Omnichannel SMS
MessageBird (now Bird) is a powerful omnichannel messaging platform supporting SMS, WhatsApp, and email. But it cannot send iMessages. Here's how Sendblue's iMessage API compares to Bird's omnichannel stack, and why many businesses use both.
| Feature | Sendblue | Bird (MessageBird) |
|---|---|---|
| iMessage Support | ✓ | ✗ |
| SMS Support | ✓ | ✓ |
| WhatsApp Support | ✗ | ✓ |
| RCS Support | ✓ | ✓ |
| A2P 10DLC Required | No (for iMessage) | Yes (for SMS) |
| Response Rate | ~30-45% (iMessage) | ~5-10% (SMS) |
| Contact Card (vCard) API | ✓ | ✗ |
| FaceTime Audio | ✓ | ✗ |
| Blue Bubbles | ✓ | ✗ |
| Read Receipts | ✓ | ✗ |
| Flow Builder | ✗ | ✓ |
| SOC 2 | ✓ | ✓ |
| HIPAA | ✓ | ✗ |
Why Businesses Add Sendblue to Bird
Bird (formerly MessageBird) is a strong omnichannel platform. Its Flow Builder makes it easy to create automated messaging workflows across SMS, WhatsApp, email, and voice. For businesses operating in Europe or targeting WhatsApp-heavy markets, Bird is an excellent choice.
But Bird has a gap: it cannot send iMessages. In the U.S., where over 60% of smartphone users have iPhones, this means SMS is the only way to reach those users through Bird. And SMS response rates have been declining steadily due to A2P filtering, carrier spam blocks, and consumer fatigue.
Sendblue fills that gap. By adding Sendblue's iMessage API alongside Bird, businesses can reach iPhone users with blue bubble messages that bypass carrier filtering entirely, while continuing to use Bird for WhatsApp, email, and Android SMS.
iMessage vs Omnichannel SMS
Bird's omnichannel approach covers many channels, but none of them deliver the same engagement as iMessage for U.S. iPhone users:
- SMS through Bird: Subject to A2P 10DLC registration, carrier spam filtering, and declining deliverability. Response rates average 5-10%.
- iMessage through Sendblue: Bypasses carrier networks entirely. No A2P registration, no spam filtering, no short code stigma. Response rates average 30-45%.
- WhatsApp through Bird: Strong in international markets but has low adoption for business messaging in the U.S.
For U.S.-focused businesses, iMessage through Sendblue delivers the highest engagement rates of any messaging channel. The blue bubble format signals a personal, trusted conversation rather than marketing, which translates directly to higher response and conversion rates.
Using Sendblue and Bird Together
The ideal setup for businesses with a global or multi-channel strategy is to use both platforms:
- Sendblue handles iPhone users in the U.S. via iMessage, delivering blue bubble messages with read receipts, typing indicators, and vCard support
- Bird handles WhatsApp messaging, email campaigns, voice workflows, and SMS for Android users
- Sendblue's iMessage detection API identifies which recipients have iMessage, enabling intelligent routing between platforms
This gives you the best of both worlds: Bird's omnichannel automation for broad reach, plus Sendblue's iMessage capability for maximum engagement with iPhone users. Explore the Sendblue API docs to see how to integrate both into your workflow.
Frequently Asked Questions
Can MessageBird (Bird) send iMessages?
No. MessageBird (now Bird) supports SMS, WhatsApp, Email, Voice, and RCS, but it cannot send iMessages. To send iMessages programmatically, you need an iMessage API provider like Sendblue.
Should I replace Bird with Sendblue?
Most businesses use both. Bird is excellent for omnichannel messaging including SMS, WhatsApp, and email. Sendblue adds iMessage capability for reaching iPhone users with blue bubbles and higher response rates. The two platforms complement each other.
Does Sendblue require A2P 10DLC registration?
No. iMessages sent through Sendblue bypass carrier networks entirely, so there is no A2P 10DLC registration required. This eliminates weeks of registration time and ongoing compliance overhead.
How do iMessage response rates compare to SMS through Bird?
Businesses typically see 30-45% response rates with iMessage compared to 5-10% with SMS. This improvement comes from iMessages bypassing spam filters, appearing as trusted blue bubbles, and supporting richer interactions like read receipts and tapbacks.
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