Linq

Overview

Linq sells a REST API that lets products and AI agents send and receive iMessage, RCS and SMS from real phone numbers, with voice calls included. The company started out selling digital business cards and has since moved to messaging APIs. Its site names Elliott Potter and Pat Sully as founders and says Linq raised $20M in 2026.

Key features

• iMessage with group chats, tapback reactions, read receipts and typing indicators
• Photos, videos and voice notes
• Find My location sharing and iMessage apps
• RCS with automatic SMS fallback
• Phone calls with transcription
• Real-time webhooks

Pricing

Listed on linqapp.com/s/pricing:

• Hobby: $0/mo, used through Linq's CLI, for up to 20 contacts
• Pro: from $260/mo, with a 7-day free trial. Adds iMessage apps, payments, group messaging, zero data retention, managed load balancing and a dedicated Slack channel. Live location costs $79/mo more.
• Enterprise: custom, with volume discounts, contractual SLAs, forward deployed engineers and SSO

Linq does not charge per message.

Reliability and compliance

Linq states 99.95% uptime backed by a contractual SLA, a median latency under 120ms, more than 750M messages processed and more than 1,000 teams. It says it holds SOC 2 Type I and Type II certification, with reports for 2022, 2024, 2025 and 2026.

Sources

• linqapp.com/imessage-api
• linqapp.com/s/pricing
• linqapp.com/s/security
• linqapp.com/s/ai-instructions