Mail File Viewer vs Gamma PDF

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

Mail File Viewer compared with Gamma PDF
Detail	Mail File Viewer	Gamma PDF
What it does	Read email files privately in your browser with no upload	Read papers. Keep what you learn.
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Free	Freemium
Pricing	Not given	Free: desktop app and self-hosted server. Lite: $2/month or $20/year. Plus: $5/month or $50/year. Pro: $20/month or $200/year.
Key features	Read winmail.dat and EML files in browser View embedded images safely Preview PDF attachments Download attachments individually or as ZIP No file uploads to server Display sender, date and message content	Highlight, draw, and annotate on PDFs with every mark becoming a note Outliner with live Markdown and LaTeX for mathematical notation AI chat to ask questions about papers with cited answers Full-library search across notes, highlights, and all PDFs Shared workspaces with live cursors and comments for collaboration Works offline on iPad, Android, and desktop with automatic sync Integrations with Zotero, Obsidian, Logseq, and Notion Browser extension for one-click saving papers with metadata
What makes it different	All processing happens in your browser with no uploads Private handling of email attachments Outlook hides Safe display of external images with user permission	Self-hosted option with one Docker image for full control over data Live math support with Markdown and LaTeX directly in outliner notes Works on any device: Windows, macOS, Linux, iPad, Android, and browsers No vendor lock-in with SQLite files and export at any time
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	2	0
Citation Flow (Majestic)	19	9
Referring domains (Majestic)	6	1

4 details filled in for both companies.

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