Project Blue vs Linq
Compare Project Blue and Linq side by side: iMessage features, channels, developer tools, pricing and compliance, checked on each provider's own site.
Project Blue
iMessage, SMS and FaceTime Audio lines inside your CRM
- Starting price
- $166/month per line, billed annually
- Free plan
- Free trial on a shared line, verified numbers only
Linq
iMessage, RCS and SMS API with flat monthly pricing
- Starting price
- $260/month (Pro)
- Free plan
- Hobby: $0, up to 20 contacts, used through the CLI
Project Blue supports 42 of the 77 features compared here, and Linq supports 63.
Where Project Blue is ahead
Where Linq is ahead
- Mentions
- Threaded replies
- Read receipts
- Edit and unsend
- Animated text effects
- Stickers
- Formatted text
- Rich link previews
and 17 more in the table below.
Feature comparison
| Feature | ||
|---|---|---|
| iMessage messaging | ||
| iMessage | ||
| Group chats | ||
| Group management | ||
| Group name and photo | ||
| Mentions | Not listed | |
| Tapbacks | ||
| Threaded replies | Not listed | |
| Typing indicators | ||
| Read receipts | Not listed | |
| Edit and unsend | Not listed | |
| Message effects | ||
| Animated text effects | Not listed | |
| Stickers | Not listed | |
| Formatted text | Not listed | |
| Attachments | ||
| Live Photos | Not listed | Not listed |
| Rich link previews | Not listed | |
| Voice messages | ||
| Contact cards | ||
| Polls | Not listed | |
| Chat backgrounds | Not listed | |
| Location sharing | Not listed | |
| iMessage apps | Not listed | |
| Live app cards | Not listed | |
| Sender name and photo | ||
| FaceTime calls | ||
| Delivery status | ||
| iMessage availability check | ||
| Focus and Notify Anyway | Not listed | Not listed |
| Numbers and delivery | ||
| Managed lines | ||
| Dedicated numbers | ||
| Shared numbers | ||
| Bring your own number | Not listed | |
| Line pooling | ||
| SMS fallback | ||
| RCS fallback | Not listedHomepage describes fallback from iMessage to WhatsApp to SMS. RCS fallback is not described. | |
| Outbound-first messaging | ||
| Calls on the iMessage number | ||
| Other channels | ||
| SMS | ||
| RCS | ||
| Telegram | Not supportedNot offered | Not supportedNot offered |
| Slack | Not supported | |
Not supportedNot offered. iMessage can be sent to Apple ID email handles. | ||
| Phone calls | ||
| Apple Messages for Business | Not supportedNot offered | Not listedAI context page mentions it, but no product page or docs were found. |
| Unified channel API | ||
| Developer tools | ||
| REST API | ||
| TypeScript SDK | ||
| Python SDK | Not listed | |
| Other SDKs | Not listed | |
| CLI | Not listed | |
| Webhooks | ||
| Signed webhooks | Not listedWebhook docs do not mention signatures. | |
| MCP server | ||
| Open source | ||
| Self-hosting | Not listedHosted service on Project Blue lines. Self-hosting is not mentioned. | |
| Local testing | Not listedTrial accounts send real messages to verified numbers; docs say they are not a simulator. | Not listedThe CLI streams webhooks locally, but tests still use a real phone. |
| Custom channel providers | Not listed | Not listed |
| Event replay | ||
| OpenTelemetry | Not listed | |
| No-code integrations | ||
| CRM integrations | ||
| Built for AI agents | ||
| Agent framework | Not listed | |
| Agent framework integrations | Not listed | |
| Streaming replies | Not listed | |
| Agent group chats | Not listed | Not listed |
| Human handoff | Not listed | |
| Audit logs | Not listed | |
| Message history API | ||
| Plans and compliance | ||
| Free plan | ||
| Public pricing | ||
| No per-message fees | ||
| Uptime SLA | Not listedSite cites a 99.9% uptime record and a public status page. No contractual SLA found. | |
| Isolated infrastructure | ||
| SOC 2 Type II | Not listed | |
| GDPR |
Checked on each provider's own site and docs on 2026-10-25. “Not listed” means the provider does not mention it.
Pricing
Project Blue
Flat per-line pricing: $166 a month per line billed annually or $199 a month per line on a 12-month plan, with a free trial on a shared line.
Pricing model: flat per line
SourceLinq
Hobby is free with up to 20 contacts through the CLI, Pro starts at $260 a month with a 7-day free trial, and Enterprise is custom.
Pricing model: flat monthly, no per-message fees
SourceWhich should you choose?
Choose Project Blue if you need FaceTime calls, bring your own number, Slack and human handoff.
Choose Linq if you need mentions, threaded replies, read receipts and edit and unsend.
Frequently asked questions
Project Blue supports 42 of the 77 features compared here, and Linq supports 63. Project Blue adds FaceTime calls, bring your own number, Slack and human handoff. Linq adds mentions, threaded replies, read receipts, edit and unsend and animated text effects.
Project Blue: Flat per-line pricing: $166 a month per line billed annually or $199 a month per line on a 12-month plan, with a free trial on a shared line. Linq: Hobby is free with up to 20 contacts through the CLI, Pro starts at $260 a month with a 7-day free trial, and Enterprise is custom.
Linq does not support FaceTime calls.
Linq does not list bring your own number on its site or in its docs.
Linq does not support Slack.