ChatRail vs LinkupAPI

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

ChatRail compared with LinkupAPI
Detail	ChatRail	LinkupAPI
What it does	Context-aware WhatsApp infrastructure for developers	Connect your users' LinkedIn, email, WhatsApp and iMessage accounts to send messages at scale and get every reply back through one API
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	FR
Pricing model	Freemium	Paid
Pricing	Sandbox: Free with 1 connected number and 500 messages/month. Core: $15/month for 1 connected number with unlimited messaging. Core + AI: $29/month including 10,000 AI replies/month. Team: $79/month for 5 connected numbers and 50,000 AI replies/month. Extra number: $8/month. Annual billing includes	$55/month for up to 10 connected accounts, $5.50 per account for 11–50 accounts, $5.00 per account for 51–200 accounts, $4.50 per account for 201–640 accounts, $3,000/month flat for unlimited accounts. Dedicated iMessage lines $199/month per line. Unlimited usage on all channels; no per-call fees.
Key features	No SDK required, any HTTP client works Per-recipient delivery tracking Message scheduling with recurring options Context-aware AI replies grounded in alert data Runaway loop protection limits Support for text, media, documents and locations Signed webhooks with idempotency keys MCP tools for AI agent workspace management Automatic message log encryption and deletion	LinkedIn messaging, invitations, Sales Navigator InMails, posts and engagement Email outreach from Gmail, Outlook and SMTP with email finder and verification WhatsApp messaging with text, files and voice notes Dedicated iMessage lines with US and UK numbers Real-time webhook delivery of replies and bounces MCP server for Claude, ChatGPT and Gemini integration Device signature binding for account security No-code integration via Make, n8n and Zapier Account health monitoring with real-time alerts
What makes it different	No Meta approval or message templates required Context-aware AI that only accesses attached data Full message round-trip tracking from app to reply webhook Free tier with no expiry date Failure reasons in plain English, not just red dots	Unified API for four channels with the same request format across LinkedIn, email, WhatsApp and iMessage Account safety prioritized with dedicated infrastructure and real-time monitoring rather than blind limits Price capped at $3,000/month regardless of scale after 640 connected accounts GDPR and CCPA compliant with EU-hosted data and Google-verified security
Community votes	0	0
DR (Domain Rating by Ahrefs)	27 +10 (up) since last check	42 +1 (up) since last check
Trust Flow (Majestic)	17	4
Citation Flow (Majestic)	24	31
Referring domains (Majestic)	68	77

5 details filled in for both companies.

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