UserAlertX vs LinkupAPI

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

UserAlertX compared with LinkupAPI
Detail	UserAlertX	LinkupAPI
What it does	SMS and email alerts from AI agents, bots and scripts to your own verified phone or email	Connect your users' LinkedIn, email, WhatsApp and iMessage accounts to send messages at scale and get every reply back through one API
Stage	Startup	Not given
Founded	2026	Not given
Based in	US	FR
Pricing model	Freemium	Paid
Pricing	Free trial: 50 alerts or 30 days, whichever comes first, no card required. Monthly plan: $5/month for 50 tokens per month (text = 1 token, email = 0.1 token). Annual plan: $60 for 13 months (one month free), includes 50 tokens per month. Extra tokens: $5 for 150 tokens, $10 for 300, $25 for 850, $50	$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	HTTP POST API for sending alerts Email and SMS dual opt-in verification Reply keywords for opt-in/opt-out control Delivery status tracking Carrier-restricted content auto-routing to email 10DLC registration and carrier compliance One verified phone number per account Held-message queue with auto-release after opt-in Token-based billing system	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	Only texts the verified account owner—no way to message anyone else 10DLC registered with full carrier compliance from day one Automatic routing of restricted topics to email instead of SMS Free tier included with no card required upfront	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)	31 +3 (up) since last check	42 +1 (up) since last check
Trust Flow (Majestic)	3	4
Citation Flow (Majestic)	24	31
Referring domains (Majestic)	29	77

6 details filled in for both companies.

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