Sendara vs Linq

Sendara supports 28 of the 77 features compared here, and Linq supports 63.

Feature comparison

Feature	Sendara	Linq
iMessage messaging
iMessage	Supported	Supported
Group chats	SupportedCreate groups of 2 to 31 and send into them by API. One SMS member turns the group into SMS.	SupportedPro plan. Up to 31 recipients. No read or delivery receipts in groups.
Group management	SupportedAdd or remove one participant per request, iMessage groups only.	SupportedAdd and remove participants and leave a group, iMessage groups only, 3-member minimum.
Group name and photo	SupportedSet and update a group name and PNG or JPG icon.	SupportedSet display_name and group_chat_icon on group chats.
Mentions	Not listed	SupportedGroup chats only. Notifies iMessage recipients even in a muted chat.
Tapbacks	Not listed	SupportedSix classic tapbacks or any emoji, send and receive via reaction webhooks.
Threaded replies	Not listed	Supportedreply_to with optional part_index. iMessage only.
Typing indicators	PartialHomepage says you can see when contacts type. Sending typing by API is not documented.	SupportedSend and receive, in direct and group chats. iMessage only.
Read receipts	SupportedHomepage lists read receipts. No read events documented in the API.	SupportedMark chats read and receive message.read. One-to-one chats only.
Edit and unsend	Not listed	PartialEdit text up to 5 times within 15 minutes. Delete does not unsend from the recipient's device.
Message effects	Not listed	Supported11 screen and 4 bubble effects.
Animated text effects	Not listed	Supportedtext_decorations animations: big, small, shake, nod, explode, ripple, bloom, jitter.
Stickers	Not listed	SupportedPeel emoji or images onto messages, send stickers, or place them inline in text.
Formatted text	Not listed	SupportedBold, italic, underline and strikethrough ranges, plus animated text. iMessage only.
Attachments	SupportedImages, videos and other files by URL.	SupportedUp to 10MB by URL, 100MB with pre-upload.
Live Photos	Not listed	Not listed
Rich link previews	Not listed	Supportedlink parts render as rich previews on iMessage and RCS.
Voice messages	Supportedvoice_message type, .wav files for iMessage and SMS.	SupportedDedicated voice memo endpoint renders the native iMessage voice bubble.
Contact cards	Not listed	SupportedSend .vcf files as media parts.
Polls	Not listed	SupportedCreate, add options, vote and read tallies, with poll webhooks. Not as a chat's first message.
Chat backgrounds	Not listed	SupportedColor, animated or photo backgrounds, in direct and group chats.
Location sharing	Not listed	SupportedRequest, read and stop Find My shares. Live location is a $79/mo add-on on Pro.
iMessage apps	Not listed	SupportedPro plan. Cards from your own Messages extension, or Linq-hosted cards (Experiences).
Live app cards	Not listed	SupportedUpdate App Card replaces a delivered iMessage app or Experience card in place.
Sender name and photo	Not listed	SupportedContact card API sets name and photo, shared per chat via Name and Photo Sharing.
FaceTime calls	PartialFaceTime calling from the CRM. The pricing card lists it as a $99/month add-on.	Not supportedDocs say the API does not place or answer calls.
Delivery status	Not listed	Supportedsent, delivered, read and failed webhooks. Groups report sent only.
iMessage availability check	Supportedplatform-lookup returns iMessage, WhatsApp or SMS for a number.	Supportedcheck_imessage and check_rcs endpoints.
Focus and Notify Anyway	Not listed	Not listed
Numbers and delivery
Managed lines	SupportedNo Mac or hardware to run.	Supported
Dedicated numbers	SupportedEach line is a dedicated number, not shared. Custom area code for a one-time $30.	SupportedPaid lines are dedicated. Provisioned by Linq, no self-serve number API.
Shared numbers	Not listed	SupportedFree Hobby tier uses a Shared Line, inbound-first, 20 contacts.
Bring your own number	SupportedPort your existing number to Sendara's carrier, which adds 3 to 5 days.	Not listed
Line pooling	SupportedNew leads go to any line with daily capacity when no line is pinned.	SupportedManaged load balancing (Pro): send without from and Linq picks and fails over lines.
SMS fallback	Supported	Supported
RCS fallback	SupportedFalls back to RCS on supported Android phones, then SMS.	SupportedOrder is iMessage, then RCS, then SMS.
Outbound-first messaging	SupportedMessage leads first on every plan, up to 50 new conversations per line per day.	SupportedFree Hobby tier is inbound-first. Docs recommend inbound-first flows to avoid flagging.
Calls on the iMessage number	Not listed	PartialAPI forwards inbound calls on the line; outbound needs caller-ID masking via another provider.
Other channels
SMS	SupportedAs fallback for contacts not on iMessage or RCS.	Supported
RCS	SupportedUsed for supported Android contacts.	Supported
WhatsApp	PartialThe API can look up and send WhatsApp voice notes. The marketing pages do not mention WhatsApp.	BetaSeparate WhatsApp API in beta. Access by request, no SLA.
Telegram	Not supportedNot offered	Not supportedNot offered
Slack	Not supported	Not supported
Email	Not supported	Not supportedNot offered. iMessage can be sent to Apple ID email handles.
Phone calls	Not listed	PartialAPI does not place or answer calls; it forwards inbound calls. Calling lives in the Linq Blue app.
Apple Messages for Business	Not supportedNot offered	Not listedAI context page mentions it, but no product page or docs were found.
Unified channel API	SupportedOne send endpoint picks iMessage, WhatsApp or SMS per contact.	PartialiMessage, RCS and SMS share one API. WhatsApp is a separate API with its own keys and SDKs.
Developer tools
REST API	SupportedREST API with x-api-key auth and an OpenAPI spec.	Supported
TypeScript SDK	Not listed	Supported@linqapp/sdk
Python SDK	Not listed	Supportedlinq-python
Other SDKs	Not listed	SupportedOfficial Go SDK.
CLI	Not listed	Supported@linqapp/cli: signup, sending, and a local webhook listener.
Webhooks	SupportedSite says webhooks send delivery and reply events. Payloads are not in the API reference.	Supported
Signed webhooks	Not listed	SupportedHMAC-SHA256, Standard Webhooks format, with replay protection.
MCP server	Not listed	Supported@linqapp/sdk-mcp with docs search and code execution tools.
Open source	Not listed	PartialSDKs, CLI and adapters are Apache-2.0 or MIT on GitHub. The messaging platform is closed.
Self-hosting	Not listedManaged service with nothing to host. Self-hosting is not mentioned.	Not supportedLinq describes itself as fully managed, in contrast to self-hosted options.
Local testing	Not listed	Not listedThe CLI streams webhooks locally, but tests still use a real phone.
Custom channel providers	Not listed	Not listed
Event replay	Not listed	PartialRetries for 30 minutes; after that, re-fetch chats or ask Linq for a manual replay.
OpenTelemetry	Not listed	PartialW3C trace IDs on every response and webhook for OTel backends. No export of Linq spans by default.
No-code integrations	SupportedGoHighLevel, Zapier and n8n.	SupportedLinq Blue works as a GoHighLevel messaging provider. No n8n, Make or Zapier found for the API.
CRM integrations	SupportedHubSpot, Salesforce, Close and Pipedrive by OAuth.	SupportedVia Linq Blue: GoHighLevel, HubSpot and Salesforce.
Built for AI agents
Agent framework	Not listed	PartialNo own framework. Maintains a Vercel Chat SDK adapter and OpenClaw and Hermes plugins.
Agent framework integrations	Not listed	SupportedLinq-maintained Vercel Chat SDK adapter, plus OpenClaw and Hermes Agent plugins.
Streaming replies	Not listed	Not supportedDocs say the Chat SDK adapter buffers streams into one final message.
Agent group chats	Not listed	Not listed
Human handoff	Not listed	Not listed
Audit logs	Not listed	SupportedDashboard Activity page plus account-change webhooks with actor and origin.
Message history API	Not listedThe API reference has no message history endpoint.	Supported
Plans and compliance
Free plan	Not listedNo free plan or trial is mentioned.	SupportedHobby: $0, up to 20 contacts, through the CLI.
Public pricing	Supported$249/month for the first line, $149/month for each extra line, $99 setup.	SupportedPro from $260/mo. Enterprise is custom.
No per-message fees	Supported	Supported
Uptime SLA	Not supportedTerms say Sendara does not warrant uninterrupted service.	SupportedContractual SLAs on the Enterprise plan; marketing cites 99.95%
Isolated infrastructure	Not listed	SupportedDedicated lines across 4 data centers on paid plans; Hobby uses a shared line
SOC 2 Type II	Not listed	SupportedType I and Type II, reports for 2022, 2024, 2025 and 2026.
GDPR	PartialPrivacy policy lists GDPR rights for EU and UK residents. No DPA found.	SupportedDPA covers GDPR and UK GDPR, with Standard Contractual Clauses.

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 Sendara if you need FaceTime calls and bring your own number.

Choose Linq if you need mentions, tapbacks, threaded replies and edit and unsend.

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