AuthLetter vs HummingDeck

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

AuthLetter compared with HummingDeck
Detail	AuthLetter	HummingDeck
What it does	Create professional authorization letters in minutes with AI-powered templates	Share documents, track engagement in real time, and know exactly when to follow up
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	LT
Pricing model	Freemium	Freemium
Pricing	Hobby: $5.90 one-time (5 credits, valid for 12 months); Standard: $9.90/month (50 credits per month, auto-renewal); Pro: $12.90/month (100 credits per month, auto-renewal). All plans include professional templates, AI-powered generation, PDF export, and support.	Free plan with 5 documents and 5 links. Starter at €9/month for 25 documents and 50 links per document. Pro at €24/month per user for 100 documents and deal rooms with action plans. Business at €39/month per user for unlimited documents, links, rooms, custom domain and branding.
Key features	AI-powered content generation for authorization letters Multiple professionally designed templates for different scenarios Real-time preview and customization PDF download with preserved formatting Legal compliance review by experts Templates for general, financial, medical, and legal authorization letters	Real-time page-by-page engagement analytics with time tracking and completion rates Trackable document links with personal and anonymous sharing options Deal rooms bundling multiple documents with mutual action plans Automatic bot and scanner traffic filtering on all plans Support for PDF, PowerPoint, Word, Excel, and HTML file uploads CRM and Slack integrations for engagement data sync and notifications Geographic insights showing viewer location and regional engagement patterns Custom domain and branding on Business plans Restricted access with email allowlist and verification codes Accept, decline, or request changes workflow for proposal responses
What makes it different	Expert-reviewed templates ensuring legal accuracy and compliance AI assistant that generates appropriate content for specific authorization needs Instant download and immediate use	Automatic three-layer bot filtering on all plans to eliminate inflated engagement metrics from email scanners Permanent free plan with 5 documents and 5 links, no credit card required 7-day free trial on all paid plans with full feature access, no credit card needed Per-page analytics showing time spent on each section, not just aggregate views
Community votes	0	0
DR (Domain Rating by Ahrefs)	6 +1 (up) since last check	28 +1 (up) since last check
Trust Flow (Majestic)	3	8
Citation Flow (Majestic)	25	17
Referring domains (Majestic)	39	80

5 details filled in for both companies.

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