rustpush vs Sendblue

rustpush supports 39 of the 77 features compared here, and Sendblue supports 58.

Feature comparison

Feature	rustpush	Sendblue
iMessage messaging
iMessage	SupportedRegisters as an Apple device and talks to Apple's servers directly; read from source, no docs	Supported
Group chats	SupportedConversations carry a participant list and optional group name	BetaGroup API is in beta on select plans. AI Agent plan can only reply in existing groups.
Group management	SupportedChangeParticipants messages add or remove members	BetaAdd and remove participants in iMessage groups via the beta groups API.
Group name and photo	SupportedRename and IconChange messages set a group's name and photo	SupportedRename groups and set group photos on supported lines.
Mentions	SupportedMention message parts	Not listed
Tapbacks	SupportedSix classic tapbacks plus emoji; sticker tapbacks are receive only	PartialSend classic tapbacks or any emoji. No inbound reaction events documented.
Threaded replies	Supportedreply_guid and reply_part on messages	Supportedreply_to on V2 iMessage lines, in direct and group chats.
Typing indicators	SupportedTyping message type	SupportedSend and receive. iMessage 1:1 only, not in groups.
Read receipts	SupportedRead and Delivered message types	PartialCan mark chats read (1:1). Outbound statuses stop at DELIVERED, with no read status.
Edit and unsend	SupportedEdit and Unsend message types	Not supportedDocs say editing is not supported via API and delete does not unsend.
Message effects	Supportedeffect field on messages	Supported13 send_style values.
Animated text effects	SupportedBig, small, shake, nod, explode, ripple, bloom and jitter	Not listed
Stickers	PartialSticker tapbacks are received; the code marks sending them as unsupported	Not listed
Formatted text	SupportedBold, italic, underline and strikethrough	Not listed
Attachments	SupportedInline data or MMCS (iCloud) file transfer	SupportedUp to 100MB on iMessage, 5MB on SMS.
Live Photos	PartialReceived attachments carry a Live Photo flag; uploads always set it to false	Not listed
Rich link previews	SupportedLinkMeta with LPLinkMetadata rich link data	PartialDocs say links expand only after the recipient saves your contact.
Voice messages	Supportedvoice flag on messages	SupportedSend .caf files to render as inline voice notes.
Contact cards	Not listed	SupportedSend .vcf files via media_url.
Polls	Not listed	Not listed
Chat backgrounds	SupportedSetTranscriptBackground sets or removes a chat background	Not listed
Location sharing	PartialFind My clients read friends' and items' locations; OpenBubbles says sharing live location is unsupported	SupportedFind My request, read and live watch. Dedicated iMessage lines only.
iMessage apps	SupportedExtension app balloons with template layouts	SupportedApp Cards for your own Messages extension. V2 lines, not on the free plan.
Live app cards	SupportedUpdateExtension messages update a sent app balloon	PartialUpdates go out as new messages in the same App Card session; Sendblue says the original is not edited.
Sender name and photo	SupportedShare Name and Photo, including contact posters	SupportedName and Photo Sharing profile per line, shared into direct iMessage chats.
FaceTime calls	SupportedCreate, ring, join and leave FaceTime sessions	PartialOutbound FaceTime audio over WebRTC (Agora). Needs a purchased FaceTime line.
Delivery status	SupportedDelivered and Read receipts plus error messages	SupportedStatus callbacks from REGISTERED through SENT or DELIVERED.
iMessage availability check	SupportedIDS lookups validate targets before sending	SupportedLookup API checks a phone number or email for iMessage.
Focus and Notify Anyway	SupportedNotifyAnyways messages; StatusKit shares and receives Focus status	Not listed
Numbers and delivery
Managed lines	Not supportedA library; you register your own Apple ID and device identity	Supported
Dedicated numbers	Not supportedNot offered	Supported
Shared numbers	Not supported	SupportedFree sandbox uses a shared number with verified contacts only.
Bring your own number	SupportedYour own Apple ID; a phone number registers through an iPhone running a relay app	PartialOnly by porting the number in, which adds 3 to 5 days.
Line pooling	Not listed	SupportedNumber pooling with sticky sending. Automatic line selection needs account enablement.
SMS fallback	Not listed	Supported
RCS fallback	Not listed	SupportediMessage, then RCS, then SMS. RCS on V2 lines.
Outbound-first messaging	SupportedSend to any handle after an IDS key lookup	SupportedFull outbound on Enterprise or Blue Ocean; Free and AI Agent plans are inbound-first
Calls on the iMessage number	PartialFaceTime on the same Apple ID; no phone calls	SupportedDashboard calls and FaceTime from the texting number; API calls via your Twilio caller ID.
Other channels
SMS	PartialSMS message type, sent through text forwarding from a registered iPhone	Supported
RCS	Not listed	SupportedV2 lines.
WhatsApp	Not supportedNot offered	Not supportedNot offered
Telegram	Not supported	Not supported
Slack	Not supported	Not listed
Email	Not supported	Not supportedNot offered. iMessage can be sent to Apple ID email addresses.
Phone calls	Not supportedNot offered; FaceTime only	PartialNo native calling API. Dashboard calls, outbound via your Twilio caller ID, inbound forwarding.
Apple Messages for Business	Not supportedNot offered	Not supportedNot offered
Unified channel API	PartialiMessage and forwarded SMS share one message type; no other channels	SupportedOne API for iMessage, RCS and SMS, the only channels offered.
Developer tools
REST API	Not supportedRust library only; no HTTP API	Supported
TypeScript SDK	Not listedRust crate only	Supportedsendblue on npm.
Python SDK	Not listed	Supportedsendblue on PyPI.
Other SDKs	PartialThe library itself is a Rust crate; no other language bindings found	PartialGo, Rust and Ruby packages, listed as community packages.
CLI	Not listed	Supported@sendblue/cli: signup, messaging, contacts and webhooks.
Webhooks	Not supportedLibrary only; your code receives messages directly, no webhooks	Supported
Signed webhooks	Not supportedNo webhooks	PartialSends your shared secret in an sb-signing-secret header. No HMAC signature.
MCP server	Not listed	Supportedsendblue-api-mcp via npx.
Open source	PartialSource under SSPL v1; the Mac validation-data module is a closed-source stub	PartialSDKs and CLI are MIT or Apache-2.0 on GitHub. The messaging platform is closed.
Self-hosting	SupportedRuns inside your own application	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	Not listed	PartialNo replay. Docs say to repair gaps by listing messages updated since a timestamp.
OpenTelemetry	Not listed	Not listed
No-code integrations	Not listed	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	Not listed	PartialNo own framework. Maintains a Vercel Chat SDK adapter.
Agent framework integrations	Not listed	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	Not listed	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	SupportedMessages in iCloud sync for chats, messages and attachments	Supported
Plans and compliance
Free plan	SupportedFree source under SSPL v1	SupportedFree sandbox: shared number, up to 10 verified contacts, no webhooks.
Public pricing	Not listedNo prices or commercial license terms published	SupportedAI Agent plan at $100/mo per line. Enterprise is custom.
No per-message fees	SupportedNo fees; free source	Supported
Uptime SLA	Not supportedSSPL disclaims all warranty	Supported99.99% uptime SLA on the Enterprise plan
Isolated infrastructure	SupportedRuns in your own process and infrastructure	SupportedA dedicated HIPAA instance for HIPAA customers
SOC 2 Type II	Not listedSelf-hosted; compliance is up to the operator	SupportedSOC 2 Type II, report on request.
GDPR	Not listed	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 rustpush if you need mentions, edit and unsend, animated text effects and stickers.

Choose Sendblue if you need contact cards, managed lines, dedicated numbers and shared numbers.

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