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SPECIFICTION
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Linq

linqapp.com

From $260/mo Free plan WebiOSAndroidAPI
Visit linqapp.com
Spec score 8.3 #4 of 22 in Business Card Software

What it is

Linq is a communications platform and API for businesses, software platforms, and developers. It supports sending and receiving messages and making calls across iMessage, RCS, SMS, and voice, with automatic protocol selection and fallback for supported messaging channels. Rich messaging includes media, group chats, reactions, message effects, typing indicators, polls, and real-time webhooks. Listed use cases include customer support, sales engagement, appointment reminders, order notifications, and AI agents. Developers receive API documentation and CLI access; Linq says a first workflow can be built in less than five minutes. The service advertises 99.95% uptime and latency below 120 ms. Linq states that it holds SOC 2 Type I and Type II certifications, encrypts sensitive data stores at rest, and restricts privileged access to encryption keys. The Hobby plan costs nothing for up to 20 contacts. Pro starts at $260 a month; Enterprise pricing is custom. Android, iOS, web, and API access are listed.

Spec sheet

Product
Linq provides a communications platform and API for businesses and developers to send and receive messages and make calls across iMessage, RCS, SMS, and voice.Read 9 Oct 2026 · linqapp.com
Intended users
Linq describes its API as designed for software platforms, CRM and sales tools, customer support platforms, marketing automation tools, and developers building messaging solutions.Read 9 Oct 2026 · docs.linqapp.com
Support
The Pro plan includes a dedicated Slack channel for support and updates; Enterprise includes forward deployed engineers.Read 9 Oct 2026 · linqapp.com
Headquarters
Birmingham, Alabama, United StatesRead 28 Sep 2026 · linqapp.com
API limitation
Using the Partner API requires a bearer token provisioned by a Linq representative and at least one phone number assigned to the account.Read 9 Oct 2026 · docs.linqapp.com
Developer setup
Linq says developers can build their first workflow in less than five minutes and offers API documentation and CLI access.Read 9 Oct 2026 · linqapp.com
Encryption
Linq states sensitive customer data stores are encrypted at rest and privileged access to encryption keys is restricted.Read 9 Oct 2026 · linqapp.com
Integration
Linq publishes an official vendor adapter for Vercel's Chat SDK that adds iMessage, RCS, and SMS delivery channels.Read 9 Oct 2026 · linqapp.com
Messaging
The API supports iMessage, RCS, and SMS, with automatic protocol selection and fallback.Read 9 Oct 2026 · docs.linqapp.com
Privacy limitation
The pricing page lists zero data retention as a Pro feature.Read 9 Oct 2026 · linqapp.com
Reliability
Linq advertises 99.95% uptime and latency below 120 ms on its product page.Read 9 Oct 2026 · linqapp.com
Rich messaging
Features include rich media, group chats, reactions, message effects, typing indicators, polls, and real-time webhooks.Read 9 Oct 2026 · docs.linqapp.com
Security certification
Linq says it holds SOC 2 Type I and Type II certifications and continuously monitors 70 controls.Read 9 Oct 2026 · linqapp.com
Use cases
Linq identifies customer support, sales engagement, appointment reminders, order notifications, and AI agents as API use cases.Read 9 Oct 2026 · docs.linqapp.com

Plans and prices

Hobby Free $0/mo Up to 20 contacts · iMessage · RCS and SMS fallback · Full Linq API access · Message status webhooks · SOC 2 Type II compliant Read 9 Oct 2026 · linqapp.com
Pro $260 a month Starting at $260/mo Everything in Hobby · iMessage Apps · Payments · Group messaging · Zero data retention · Live location · Managed load balancing · Enterprise grade reliability · Dedicated Slack support Read 9 Oct 2026 · linqapp.com
Enterprise Priced on request Custom Everything in Pro · Volume discounts · Contractual SLAs · Forward deployed engineers · SSO Read 9 Oct 2026 · linqapp.com

Every Linq plan and price →

Strong points and limits

Strong points

  • Supports iMessage, RCS, and SMS fallback
  • Rich media and group messaging features
  • SOC 2 Type I and Type II stated
  • 99.95% uptime advertised
  • Free Hobby plan for up to 20 contacts

Limits

  • Zero data retention is listed only for Pro
  • Partner API requires a Linq-provisioned bearer token
  • Partner API requires an assigned phone number
  • Enterprise pricing is custom

Who it suits

Businesses and developers building messaging, calling, CRM, support, sales, marketing, reminder, notification, or AI-agent workflows. It also suits software platforms needing iMessage, RCS, and SMS delivery channels.

Verdict

Linq provides cross-protocol messaging and calling infrastructure with rich message features and developer tooling. A free Hobby tier is available, while advanced controls and support appear in higher plans.

Where Specifiction places it

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