Miss Blue vs Project Blue

Compare Miss Blue and Project Blue side by side: iMessage features, channels, developer tools, pricing and compliance, checked on each provider's own site.

Miss Blue

Dedicated iMessage line with API, team inbox and calling
Starting price
$99/month per number (launch price)
Free plan
Free sandbox; 30-minute live demo line

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

Miss Blue supports 47 of the 77 features compared here, and Project Blue supports 42.

Feature comparison

FeatureMiss BlueProject Blue
iMessage messaging
iMessage
Supported
Supported
Group chats
SupportedSend into an existing group by its chat_id and read group threads.
SupportedSend to groups of 2 to 32 by API. Not on trial accounts, and group sends do not sync to the CRM.
Group management
SupportedCreate groups of 2 to 32 and add or remove members; leaving a group is not supported yet.
PartialGroups are created by sending to a set of numbers. No add or remove member endpoints documented.
Group name and photo
SupportedRename a group and set or remove its photo.
PartialgroupName can be set when a group is created. No group photo documented.
Mentions
Not listed
Not listed
Tapbacks
SupportedAdd or remove the six tapbacks; tapbacks from customers appear on the message.
PartialSend or remove the six classic tapbacks on inbound iMessages. Receiving reactions is not documented.
Threaded replies
SupportedQuoted replies with reply_to_message_id.
Not listed
Typing indicators
SupportedSend typing, optional auto-typing on inbound iMessage, and contact typing via webhook.
PartialSend only, iMessage only, into an existing conversation. Inbound typing events not documented.
Read receipts
SupportedExplicit read receipts by API; outbound messages report read.
Not listed
Edit and unsend
PartialUnsend within Apple's 2-minute window. An edit endpoint is documented, but the FAQ says editing is not supported yet.
Not listed
Message effects
Not supportedThe errors page says effects are not a supported API operation yet.
Supported4 bubble and 9 screen effects through the effect field. iMessage only.
Animated text effects
Not supportedThe errors page says expressive text styles and effects are not supported yet.
Not listed
Stickers
Not listed
Not listed
Formatted text
Not listed
Not listed
Attachments
SupportedImages, video, PDFs, Office files and more up to 100 MiB, one per send, or carousels of 2 to 20 images.
SupportedImages, videos and vCards by URL.
Live Photos
Not listed
Not listed
Rich link previews
Not listed
Not listed
Voice messages
SupportedAudio-only sends use the native voice-note bubble by default.
SupportedAudio files sent as voice memos, plus AI text-to-speech voice memos.
Contact cards
Not listed
SupportedVCF files through mediaAttachmentUrl.
Polls
Not listed
Not listed
Chat backgrounds
Not listed
Not listed
Location sharing
SupportedSend Find My requests, read the sharing state and watch live fixes over Server-Sent Events.
Not listed
iMessage apps
Not listed
Not listed
Live app cards
Not listed
Not listed
Sender name and photo
SupportedSet and verify the number's Name and Photo Sharing profile by API.
SupportedSet, read and share a line's Share Name and Photo card by API.
FaceTime calls
PartialFaceTime Audio only, as a $250/month add-on per line.
PartialFaceTime Audio only, outbound and inbound, on FaceTime-enabled accounts. Not on trials.
Delivery status
Supportedpending, sent, delivered, read and failed with a reason, by webhook or per-message callback.
PartialMessages carry a status field such as delivered. Webhooks cover only inbound and outbound messages.
iMessage availability check
SupportedLive iMessage and FaceTime registration lookup; a separate lookup reads your own past traffic.
Supported
Focus and Notify Anyway
Not listed
Not listed
Numbers and delivery
Managed lines
SupportedEach number runs on a Mac that Miss Blue operates; staff provision numbers within about 48 to 72 hours.
SupportedNo iPhone, Mac or SIM needed. Lines are set up remotely, usually within one business day.
Dedicated numbers
Supported$99/month per number at the launch price (normally $198).
SupportedA dedicated line per rep, never shared. New lines are requested by API and provisioned by the team.
Shared numbers
SupportedShared-pool numbers are offered as a separate, labelled option.
PartialTrial accounts only: a shared line that can reach verified numbers.
Bring your own number
SupportedTransfer an existing number in; staff complete it in about 1 to 2 weeks.
SupportedExisting numbers can be ported to Project Blue's carrier partner.
Line pooling
SupportedAuto round robin spreads new contacts across a project's dedicated numbers, then keeps each on one.
SupportedSends without lineId are load balanced across your lines.
SMS fallback
SupportedFalls back to RCS, or to SMS where RCS is unavailable, from the same number.
SupportedFalls back to SMS from the same line when iMessage is unavailable.
RCS fallback
SupportedFalls back to RCS where the carrier and recipient support it.
Not listedHomepage describes fallback from iMessage to WhatsApp to SMS. RCS fallback is not described.
Outbound-first messaging
SupportedNew contacts are paced: 50 per number per day by default and 150 messages a day in total.
SupportedLines are sold as outbound-ready. Guidelines rule out mass outbound iMessage.
Calls on the iMessage number
SupportedFaceTime Audio and phone calls from the number customers already message.
SupportedDialer and FaceTime Audio calls from the same number as the messaging line.
Other channels
SMS
SupportedAs fallback from the iMessage number; the docs also describe Twilio SMS lines.
Supported
RCS
SupportedAs fallback when the carrier and recipient support it.
PartialRCS for rich media was rolled out in 2026. The API lists RCS as inbound only.
WhatsApp
Not supportedNot offered
PartialHomepage lists WhatsApp as a fallback step. No WhatsApp option in the API, and llms.txt says it is not a WhatsApp API.
Telegram
Not supported
Not supportedNot offered
Slack
Not supportedNot offered as a channel; the Slack page is an integration guide.
PartialSlack notifications for inbound replies. Not a messaging channel.
Email
Not supportedNot offered as a channel; iMessage can be sent to Apple ID email addresses.
Not supportedDeveloper page says it is not a general email API.
Phone calls
PartialBrowser phone calls as a $75/month add-on; API keys cannot place regular phone calls.
SupportedCloud dialer with inbound, outbound, routing, recording and voicemail, plus a browser calling SDK.
Apple Messages for Business
Not supportedNot offered
Not supportedNot offered
Unified channel API
SupportediMessage with RCS and SMS fallback, groups and calls share one API and webhook stream.
PartialOne send endpoint covers iMessage and SMS. Calls and FaceTime use separate endpoints.
Developer tools
REST API
Supported113 endpoints across 13 resources, with an OpenAPI file.
SupportedREST API with Bearer keys and an OpenAPI spec.
TypeScript SDK
Not listedThe API is plain HTTP; no SDK package was found.
Partial@tryprojectblue/dialer is a browser SDK for phone calls only. No messaging SDK.
Python SDK
Not listed
Not listed
Other SDKs
Not listed
Not listed
CLI
Supportedmb, with installers for macOS, Linux and Windows.
Not listed
Webhooks
Supported
SupportedInbound and outbound message events and inbound FaceTime call events.
Signed webhooks
SupportedHex HMAC-SHA256 over timestamp and raw body; per-message callbacks are unsigned.
Not listedWebhook docs do not mention signatures.
MCP server
Supportedmb mcp serves the CLI commands as MCP tools for Claude Code, Codex, Cursor and others.
SupportedRemote MCP server with OAuth 2.1, plus an optional Claude Code plugin.
Open source
Not supportedThe CLI repo holds builds and installers without a license; the service is closed.
PartialThe dialer SDK is MIT licensed on npm. The platform is closed.
Self-hosting
Not listed
Not listedHosted service on Project Blue lines. Self-hosting is not mentioned.
Local testing
Supportedmb_sandbox_ keys simulate outcomes and signed webhooks on a virtual number, with no phone.
Not listedTrial accounts send real messages to verified numbers; docs say they are not a simulator.
Custom channel providers
Not listed
Not listed
Event replay
PartialPer-endpoint delivery log and history sync; docs say to poll GET /v1/messages to repair missed events.
Not supportedDocs say webhooks have no retries and failed deliveries are not replayed.
OpenTelemetry
Not listed
Not listed
No-code integrations
BetaGoHighLevel connector is in beta; the Zapier, Make and n8n pages are setup guides.
SupportedGoHighLevel conversation provider with workflow actions and triggers. llms.txt also lists Zapier.
CRM integrations
BetaGoHighLevel connector in beta; HubSpot and Salesforce pages describe API builds set up in onboarding.
SupportedHubSpot and Close CRM. Salesforce is not listed.
Built for AI agents
Agent framework
PartialNo agent SDK; offers a managed conversational AI add-on and multi-step automations.
Not listed
Agent framework integrations
PartialGuide pages for Vercel AI SDK, Chat SDK, LangChain and Claude Agent SDK; no adapter package found.
Not listed
Streaming replies
Not listed
Not listed
Agent group chats
Not listed
Not listed
Human handoff
SupportedShared Message Center for human takeover, with internal notes and resolving.
PartialReps reply in the CRM inbox and can join group threads. No agent handoff controls documented.
Audit logs
Not listed
Not listed
Message history API
SupportedThread history by API and a conversation sync from the line's Mac.
SupportedList and get messages, inbound and outbound, with filters.
Plans and compliance
Free plan
SupportedFree sandbox with simulated sends, plus a 30-minute live demo line by texting DEMO.
PartialFree trial on a shared line to verified numbers. Some endpoints are off on trial.
Public pricing
Supported
Supported$166/month per line billed annually, or $199/month per line on a 12-month plan.
No per-message fees
Supported
SupportedFlat per-line pricing with unlimited texting under fair use.
Uptime SLA
PartialEnterprise only: contracted service terms; no uptime figure published.
Not listedSite cites a 99.9% uptime record and a public status page. No contractual SLA found.
Isolated infrastructure
SupportedDedicated numbers run on hardware assigned to you; Enterprise adds dedicated equipment.
PartialEach rep gets a dedicated line that is never shared. Other infrastructure is not described.
SOC 2 Type II
Not listed
Not listed
GDPR
Not listed
PartialPrivacy policy lists GDPR and UK GDPR rights. No DPA found.

Checked on each provider's own site and docs on 2026-10-25. “Not listed” means the provider does not mention it.

Pricing

Miss Blue

A free sandbox for testing, then $99 per dedicated number per month at the launch price (normally $198), with the usual $479 setup fee waived until October 31; FaceTime Audio ($250), phone calls ($75) or both ($300) are optional add-ons per line, and Enterprise is custom.

Pricing model: flat per line

Source

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

Source

Which should you choose?

Choose Miss Blue if you need threaded replies, read receipts, edit and unsend and location sharing.

Choose Project Blue if you need message effects, contact cards, WhatsApp and Slack.

Frequently asked questions