Sendblue vs Twilio

Sendblue supports 58 of the 77 features compared here, and Twilio supports 37.

Feature comparison

Feature	Sendblue	Twilio
iMessage messaging
iMessage	Supported	Not supportedNo iMessage support
Group chats	BetaGroup API is in beta on select plans. AI Agent plan can only reply in existing groups.	Not supported
Group management	BetaAdd and remove participants in iMessage groups via the beta groups API.	Not supported
Group name and photo	SupportedRename groups and set group photos on supported lines.	Not supported
Mentions	Not listed	Not supported
Tapbacks	PartialSend classic tapbacks or any emoji. No inbound reaction events documented.	Not supported
Threaded replies	Supportedreply_to on V2 iMessage lines, in direct and group chats.	Not supported
Typing indicators	SupportedSend and receive. iMessage 1:1 only, not in groups.	Not supported
Read receipts	PartialCan mark chats read (1:1). Outbound statuses stop at DELIVERED, with no read status.	Not supported
Edit and unsend	Not supportedDocs say editing is not supported via API and delete does not unsend.	Not supported
Message effects	Supported13 send_style values.	Not supported
Animated text effects	Not listed	Not supported
Stickers	Not listed	Not supported
Formatted text	Not listed	Not supported
Attachments	SupportedUp to 100MB on iMessage, 5MB on SMS.	Not supported
Live Photos	Not listed	Not supported
Rich link previews	PartialDocs say links expand only after the recipient saves your contact.	Not supported
Voice messages	SupportedSend .caf files to render as inline voice notes.	Not supported
Contact cards	SupportedSend .vcf files via media_url.	Not supported
Polls	Not listed	Not supported
Chat backgrounds	Not listed	Not supported
Location sharing	SupportedFind My request, read and live watch. Dedicated iMessage lines only.	Not supported
iMessage apps	SupportedApp Cards for your own Messages extension. V2 lines, not on the free plan.	Not supported
Live app cards	PartialUpdates go out as new messages in the same App Card session; Sendblue says the original is not edited.	Not supported
Sender name and photo	SupportedName and Photo Sharing profile per line, shared into direct iMessage chats.	Not supported
FaceTime calls	PartialOutbound FaceTime audio over WebRTC (Agora). Needs a purchased FaceTime line.	Not supported
Delivery status	SupportedStatus callbacks from REGISTERED through SENT or DELIVERED.	Not supported
iMessage availability check	SupportedLookup API checks a phone number or email for iMessage.	Not supported
Focus and Notify Anyway	Not listed	Not supported
Numbers and delivery
Managed lines	Supported	Not supportedNo iMessage support
Dedicated numbers	Supported	SupportedLocal, toll-free and short code numbers; US local from $1.15/month
Shared numbers	SupportedFree sandbox uses a shared number with verified contacts only.	PartialTesting only: shared WhatsApp Sandbox number and the Console Virtual Phone
Bring your own number	PartialOnly by porting the number in, which adds 3 to 5 days.	PartialHosted SMS for US/Canada non-mobile numbers; Hosted Numbers API not yet GA. BYOC trunks for voice
Line pooling	SupportedNumber pooling with sticky sending. Automatic line selection needs account enablement.	SupportedMessaging Service sender pools route traffic across many senders
SMS fallback	Supported	Not supportedNo iMessage support; RCS falls back to SMS or MMS
RCS fallback	SupportediMessage, then RCS, then SMS. RCS on V2 lines.	Not supportedNo iMessage support
Outbound-first messaging	SupportedFull outbound on Enterprise or Blue Ocean; Free and AI Agent plans are inbound-first	SupportedBusiness-initiated SMS; WhatsApp needs approved templates; US A2P needs 10DLC or toll-free registration
Calls on the iMessage number	SupportedDashboard calls and FaceTime from the texting number; API calls via your Twilio caller ID.	Not supportedNo iMessage support
Other channels
SMS	Supported	SupportedSMS and MMS in 180+ countries
RCS	SupportedV2 lines.	SupportedRCS Business Messaging in supported regions
WhatsApp	Not supportedNot offered	Supported
Telegram	Not supported	Not supportedNot offered
Slack	Not listed	Not supported
Email	Not supportedNot offered. iMessage can be sent to Apple ID email addresses.	SupportedTwilio Email API and Twilio SendGrid
Phone calls	PartialNo native calling API. Dashboard calls, outbound via your Twilio caller ID, inbound forwarding.	SupportedProgrammable Voice and Elastic SIP Trunking
Apple Messages for Business	Not supportedNot offered	BetaPrivate beta; brands request access
Unified channel API	SupportedOne API for iMessage, RCS and SMS, the only channels offered.	SupportedMessaging API covers SMS, MMS, RCS, WhatsApp and Messenger; email is a separate API
Developer tools
REST API	Supported	Supported
TypeScript SDK	Supportedsendblue on npm.	Supportedtwilio-node, with TypeScript types
Python SDK	Supportedsendblue on PyPI.	Supported
Other SDKs	PartialGo, Rust and Ruby packages, listed as community packages.	SupportedC#/.NET, Java, PHP, Ruby and Go
CLI	Supported@sendblue/cli: signup, messaging, contacts and webhooks.	SupportedTwilio CLI (twilio-cli)
Webhooks	Supported	Supported
Signed webhooks	PartialSends your shared secret in an sb-signing-secret header. No HMAC signature.	SupportedX-Twilio-Signature header, HMAC-SHA1 with the account auth token
MCP server	Supportedsendblue-api-mcp via npx.	BetaHosted docs MCP (public beta, read-only); Twilio Alpha MCP exposes the APIs
Open source	PartialSDKs and CLI are MIT or Apache-2.0 on GitHub. The messaging platform is closed.	Not supportedClosed platform; SDKs, CLI and Agent Connect are MIT-licensed
Self-hosting	Not listedSold as a hosted service on Sendblue's Apple devices; self-hosting is not mentioned.	Not listed
Local testing	Not listed	SupportedConsole Virtual Phone simulates a handset for SMS; Dev Phone for SMS and calls
Custom channel providers	Not listed	SupportedFlex takes custom chat clients and channel types; BYOC plugs your own carrier into Voice
Event replay	PartialNo replay. Docs say to repair gaps by listing messages updated since a timestamp.	PartialEvent Streams retries up to 4 hours; webhook retries via connection overrides; no replay API
OpenTelemetry	Not listed	Not listed
No-code integrations	SupportedZapier, Make and GoHighLevel. Docs FAQ says n8n resources are coming soon.	SupportedZapier, per Twilio's own tutorial; Studio is Twilio's own visual builder
CRM integrations	SupportedGoHighLevel, HubSpot, Salesforce, Close and Monday.com.	SupportedTwilio for Salesforce and Flex-Salesforce integration
Built for AI agents
Agent framework	PartialNo own framework. Maintains a Vercel Chat SDK adapter.	SupportedTwilio Agent Connect SDK with Conversation Orchestrator and Memory
Agent framework integrations	SupportedSendblue-maintained Vercel Chat SDK adapter.	SupportedAgent Connect connectors for AWS Strands, Bedrock AgentCore, Microsoft Agent Framework, Google ADK
Streaming replies	Not supportedDocs say message editing is not supported via the API.	PartialVoice only: ConversationRelay speaks LLM text tokens as they stream; SMS update only redacts
Agent group chats	BetaA line can add another of your own dedicated lines to a group, via the beta groups API.	PartialConversations (classic) group MMS on US/Canada numbers, which an agent number can join
Human handoff	SupportedShared team inboxes with assignment, and agents that escalate to a rep.	SupportedAI agents hand off to human agents in Flex with context
Audit logs	PartialSecurity page says all API requests are logged. No customer-facing audit log documented.	SupportedMonitor Events API; 30 days free, 13 months on paid editions
Message history API	Supported	SupportedList Message resources; Conversation Orchestrator lists conversations
Plans and compliance
Free plan	SupportedFree sandbox: shared number, up to 10 verified contacts, no webhooks.	Partial30-day trial, no card: 100 SMS, 3,000 emails, 75 voice minutes, 5 verified recipients
Public pricing	SupportedAI Agent plan at $100/mo per line. Enterprise is custom.	Supported
No per-message fees	Supported	Not supportedBilled per SMS segment, plus carrier fees
Uptime SLA	Supported99.99% uptime SLA on the Enterprise plan	Supported99.95% monthly API availability; 99.99% with Enterprise Edition; betas excluded
Isolated infrastructure	SupportedA dedicated HIPAA instance for HIPAA customers	Not listed
SOC 2 Type II	SupportedSOC 2 Type II, report on request.	Supported
GDPR	SupportedPrivacy policy says Sendblue adheres to GDPR. DPAs on request.	SupportedData Protection Addendum covers GDPR

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

Pricing

Which should you choose?

Choose Sendblue if you need iMessage, group chats, group management and group name and photo.

Choose Twilio if you need WhatsApp, email, Apple Messages for Business and local testing.

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