Dial vs Sendblue

Dial supports 44 of the 77 features compared here, and Sendblue supports 58.

Feature comparison

Feature	Dial	Sendblue
iMessage messaging
iMessage	SupportedNeeds an iMessage number, provisioned through the API. Pay-as-you-go accounts only.	Supported
Group chats	SupportedSend to and read iMessage groups the number was added to. Polls work in groups; replies and reactions do not.	BetaGroup API is in beta on select plans. AI Agent plan can only reply in existing groups.
Group management	Not supportedDocs say Dial cannot create a group, join one or accept an invite link.	BetaAdd and remove participants in iMessage groups via the beta groups API.
Group name and photo	Not listedGroup names are read live from the line; no way to set a name or photo is documented.	SupportedRename groups and set group photos on supported lines.
Mentions	Not listed	Not listed
Tapbacks	SupportedSix tapback names or any single emoji. Sent only on inbound messages; received on message.received.	PartialSend classic tapbacks or any emoji. No inbound reaction events documented.
Threaded replies	SupportedNative threaded replies to inbound iMessage or RCS messages, one-to-one only.	Supportedreply_to on V2 iMessage lines, in direct and group chats.
Typing indicators	PartialSend only, one-to-one and in groups. No inbound typing events are documented.	SupportedSend and receive. iMessage 1:1 only, not in groups.
Read receipts	PartialReports when recipients read your iMessages. No way to mark inbound messages read.	PartialCan mark chats read (1:1). Outbound statuses stop at DELIVERED, with no read status.
Edit and unsend	Not listed	Not supportedDocs say editing is not supported via API and delete does not unsend.
Message effects	Not listed	Supported13 send_style values.
Animated text effects	Not listed	Not listed
Stickers	Not listed	Not listed
Formatted text	Not listed	Not listed
Attachments	SupportedOne attachment per iMessage, 5 MB. Images, audio, video, PDF, vCard and iCalendar. No HEIC.	SupportedUp to 100MB on iMessage, 5MB on SMS.
Live Photos	Not listed	Not listed
Rich link previews	Not listed	PartialDocs say links expand only after the recipient saves your contact.
Voice messages	SupportedA single audio file on an iMessage number is sent as a native voice message.	SupportedSend .caf files to render as inline voice notes.
Contact cards	SupportedSend .vcf files as media. Inbound cards arrive as text/vcard media (since October 2026).	SupportedSend .vcf files via media_url.
Polls	Supported2 to 10 options, one-to-one or in iMessage groups. Votes arrive as events with a live tally.	Not listed
Chat backgrounds	Not listed	Not listed
Location sharing	Not listed	SupportedFind My request, read and live watch. Dedicated iMessage lines only.
iMessage apps	Not listed	SupportedApp Cards for your own Messages extension. V2 lines, not on the free plan.
Live app cards	Not listed	PartialUpdates go out as new messages in the same App Card session; Sendblue says the original is not edited.
Sender name and photo	SupportedSet the first name, last name and photo shown beside the number's iMessages.	SupportedName and Photo Sharing profile per line, shared into direct iMessage chats.
FaceTime calls	Not listed	PartialOutbound FaceTime audio over WebRTC (Agora). Needs a purchased FaceTime line.
Delivery status	PartialiMessage sends report no delivery receipts; delivery is inferred once a read arrives.	SupportedStatus callbacks from REGISTERED through SENT or DELIVERED.
iMessage availability check	SupportedLookup endpoint checks whether any number can receive iMessage or WhatsApp.	SupportedLookup API checks a phone number or email for iMessage.
Focus and Notify Anyway	Not listed	Not listed
Numbers and delivery
Managed lines	SupportediMessage numbers are provisioned through the API, with asynchronous setup. No Mac or device needed.	Supported
Dedicated numbers	SupportedEach number belongs to your account. Docs say only US numbers can be provisioned now.	Supported
Shared numbers	Not listed	SupportedFree sandbox uses a shared number with verified contacts only.
Bring your own number	Not listed	PartialOnly by porting the number in, which adds 3 to 5 days.
Line pooling	Not listedDocs suggest splitting recipients across several iMessage numbers by hand; no automatic pooling found.	SupportedNumber pooling with sticky sending. Automatic line selection needs account enablement.
SMS fallback	SupportediMessage numbers fall back to RCS or SMS automatically, at no message charge.	Supported
RCS fallback	Supported	SupportediMessage, then RCS, then SMS. RCS on V2 lines.
Outbound-first messaging	SupportedCold outbound allowed. Each iMessage number can start up to 50 new conversations a day.	SupportedFull outbound on Enterprise or Blue Ocean; Free and AI Agent plans are inbound-first
Calls on the iMessage number	SupportediMessage numbers also place and receive AI voice calls, or forward inbound calls.	SupportedDashboard calls and FaceTime from the texting number; API calls via your Twilio caller ID.
Other channels
SMS	SupportedTwo-way SMS; MMS to US and Canada. Subscription accounts can text US numbers only.	Supported
RCS	PartialOnly as automatic fallback from iMessage numbers; not a channel you can pick.	SupportedV2 lines.
WhatsApp	BetaBeta, enabled per account. Runs on an iMessage number, one attachment per message.	Not supportedNot offered
Telegram	Not supportedNot offered	Not supported
Slack	Not supportedNot offered as a channel. A Zapier app can forward messages to Slack.	Not listed
Email	Not supportedNot offered	Not supportedNot offered. iMessage can be sent to Apple ID email addresses.
Phone calls	SupportedInbound and outbound AI voice calls with transcripts.	PartialNo native calling API. Dashboard calls, outbound via your Twilio caller ID, inbound forwarding.
Apple Messages for Business	Not listedDocs say iMessage numbers send over Apple Messages for Business, but no business chat product is documented.	Not supportedNot offered
Unified channel API	SupportedOne messages endpoint and event format for SMS, iMessage and WhatsApp, plus calls.	SupportedOne API for iMessage, RCS and SMS, the only channels offered.
Developer tools
REST API	Supported	Supported
TypeScript SDK	Supported@getdial/sdk	Supportedsendblue on npm.
Python SDK	Supporteddial-sdk	Supportedsendblue on PyPI.
Other SDKs	Not supportedSDK overview lists only Node and Python clients, plus agent framework packages.	PartialGo, Rust and Ruby packages, listed as community packages.
CLI	Supporteddial CLI, installed with a shell script or npx. Needs Node 22 or later.	Supported@sendblue/cli: signup, messaging, contacts and webhooks.
Webhooks	Supported	Supported
Signed webhooks	SupportedHMAC-SHA256 over timestamp and body, X-Dial-Signature header.	PartialSends your shared secret in an sb-signing-secret header. No HMAC signature.
MCP server	SupportedRemote server with OAuth at getdial.ai/mcp, or local stdio through the CLI.	Supportedsendblue-api-mcp via npx.
Open source	PartialThe Chat SDK adapter is MIT on GitHub. The platform is closed.	PartialSDKs and CLI are MIT or Apache-2.0 on GitHub. The messaging platform is closed.
Self-hosting	Not listedSelf-Hosted mode only means calls are driven by your own agent server; the platform itself is hosted.	Not listedSold as a hosted service on Sendblue's Apple devices; self-hosting is not mentioned.
Local testing	Not listed	Not listed
Custom channel providers	Not listed	Not listed
Event replay	PartialWebhooks retry up to 6 attempts. The live stream replays only about 2 minutes of missed events.	PartialNo replay. Docs say to repair gaps by listing messages updated since a timestamp.
OpenTelemetry	Not listed	Not listed
No-code integrations	SupportedZapier app with message and call triggers, and send, call and provision actions.	SupportedZapier, Make and GoHighLevel. Docs FAQ says n8n resources are coming soon.
CRM integrations	Not listed	SupportedGoHighLevel, HubSpot, Salesforce, Close and Monday.com.
Built for AI agents
Agent framework	PartialHosted AI voice agent runs calls from a prompt. Messaging is send and receive only.	PartialNo own framework. Maintains a Vercel Chat SDK adapter.
Agent framework integrations	SupportedLangChain, Vercel AI SDK, CrewAI, AutoGen, Microsoft Agent Framework and a Vercel Chat SDK adapter.	SupportedSendblue-maintained Vercel Chat SDK adapter.
Streaming replies	Not listed	Not supportedDocs say message editing is not supported via the API.
Agent group chats	Not listed	BetaA line can add another of your own dedicated lines to a group, via the beta groups API.
Human handoff	PartialThe voice agent can transfer a call to a person. No handoff for messaging.	SupportedShared team inboxes with assignment, and agents that escalate to a rep.
Audit logs	Not listed	PartialSecurity page says all API requests are logged. No customer-facing audit log documented.
Message history API	SupportedList and search messages, up to the 100 most recent per request.	Supported
Plans and compliance
Free plan	Supported$5 of free credit, no card. Free accounts are capped at 5-minute calls and 2 concurrent calls.	SupportedFree sandbox: shared number, up to 10 verified contacts, no webhooks.
Public pricing	Supported	SupportedAI Agent plan at $100/mo per line. Enterprise is custom.
No per-message fees	PartialMessages from a $250/month iMessage number are free. SMS on standard numbers is billed per message.	Supported
Uptime SLA	PartialUptime SLA listed for Enterprise only.	Supported99.99% uptime SLA on the Enterprise plan
Isolated infrastructure	Not listed	SupportedA dedicated HIPAA instance for HIPAA customers
SOC 2 Type II	PartialSite says SOC 2 certified. Report type and a report are not published.	SupportedSOC 2 Type II, report on request.
GDPR	SupportedDPA covers GDPR and UK GDPR, with Standard Contractual Clauses.	SupportedPrivacy policy says Sendblue adheres to GDPR. DPAs on request.

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 Dial if you need polls and WhatsApp.

Choose Sendblue if you need group management, group name and photo, message effects and rich link previews.

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