Sendblue vs Project Blue: iMessage API Comparison (2026)

Project Blue is a newer iMessage API provider that has published comparison content positioning itself against Sendblue. Here's the actual side-by-side comparison based on features, pricing, and capabilities.

Feature	Sendblue	Project Blue
Years in Operation	5+ years	~1 year
SOC 2 Compliant	Yes	No
HIPAA Support	Yes	No
iMessage + RCS + SMS	Yes	iMessage + SMS
Contact Card (vCard) API	Yes	No
FaceTime Audio API	Yes	No
Group Messaging	Yes	No
Native CRM Integrations	6+ native CRMs	Limited
SDKs	6 languages	Limited
Setup Fee	None	$500
Dedicated Number	From ~$29/mo	From $300/mo + $500 setup
Free Sandbox	Yes	Limited

Overview

Sendblue is the market leader in iMessage APIs, serving thousands of businesses over five-plus years. The platform offers the broadest feature set in the industry: iMessage with RCS and SMS fallback, contact card delivery, FaceTime Audio calling, group messaging, iMessage detection, and native integrations with six major CRMs.

Project Blue (tryprojectblue.com) is a newer entrant that has published an "/alternatives/sendblue" page positioning itself as a Sendblue alternative. While competition is healthy, it's important to compare based on actual capabilities rather than marketing claims.

Pricing Comparison

Project Blue charges a $500 setup fee plus monthly costs starting at approximately $300/month for a dedicated number. This means the first month alone costs $800+ before sending a single message.

Sendblue has no setup fee and offers dedicated iMessage lines starting at approximately $29/month. The free sandbox is available immediately with no credit card required, letting developers test the full API before committing.

For a business evaluating both options, Sendblue offers dramatically better value: lower monthly cost, no setup fee, more features, stronger compliance credentials, and a longer track record.

Features and Capabilities

Sendblue offers capabilities that Project Blue does not:

Contact card (vCard) delivery via API — Recipients can save your business info directly to their phone
FaceTime Audio calling via API — Programmatic calls that bypass spam screening
RCS fallback — Messages to Android users route through RCS before falling back to SMS
Group messaging — Multi-party iMessage conversations via API
Six native CRM integrations — GoHighLevel, HubSpot, Salesforce, Close, Monday.com, Follow Up Boss
SDKs in six languages — Python, Node.js, Ruby, PHP, Go, Java
CLI tool and MCP server — For developers and AI workflows

Project Blue offers basic iMessage sending and receiving. Their feature set is significantly more limited than Sendblue's.

Compliance

Sendblue is SOC 2 compliant and supports HIPAA with Business Associate Agreements. For businesses in healthcare, financial services, insurance, or any regulated industry, this is essential.

Project Blue does not advertise SOC 2 compliance or HIPAA support. Using a non-compliant provider for sensitive communications creates legal and regulatory risk.

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Frequently Asked Questions

Is Project Blue a good alternative to Sendblue?

Project Blue is a newer, more limited iMessage API. It lacks many features Sendblue offers — including contact card delivery, FaceTime Audio, RCS fallback, group messaging, and SOC 2/HIPAA compliance. It also costs more: $500 setup fee + $300/mo for a dedicated number, versus no setup fee and ~$29/mo with Sendblue.

Why does Project Blue have a page comparing themselves to Sendblue?

Newer competitors commonly create comparison pages positioning themselves against market leaders. We encourage you to compare based on actual features, pricing, compliance credentials, and track record rather than marketing claims.

Does Project Blue support HIPAA?

Project Blue does not advertise HIPAA support or SOC 2 compliance. Sendblue is SOC 2 certified and can execute Business Associate Agreements (BAAs) for healthcare organizations.