ViceVersa EML to PST Converter vs eryx

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

ViceVersa EML to PST Converter compared with eryx
Detail	ViceVersa EML to PST Converter	eryx
What it does	Convert EML files to Outlook PST format and PST back to EML without Outlook installed	WebAssembly sandbox for running untrusted Python safely
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Paid	Open source
Pricing	Free trial: 25 items per folder. Personal: $39 for one machine with one year of updates. Professional: $99 for 5 machines with lifetime updates. Technician: $299 for unlimited machines with lifetime updates. All licenses include 30-day money-back policy.	Not given
Key features	Preserve folder structure and hierarchy in output PST Include email attachments in converted PST files Preview emails before conversion and selectively exclude messages Convert without Outlook installed on Windows Support multiple email formats including EML, EMLX, HTML and RTF Save conversion log after each batch operation	Full CPython 3.14 with standard library Async callbacks from sandboxed code No filesystem or network unless allowed Fast startup in 1–5 milliseconds Embed from Python, JavaScript or Rust MCP server support gRPC server deployment Hosted execution over HTTP and WebSocket
What makes it different	Bidirectional conversion: same license covers both EML to PST and PST to EML transformations No Outlook installation required to perform conversions 30-day money-back guarantee on all license purchases	Full CPython 3.14 running in WebAssembly Async callbacks between sandbox and host Extremely fast sandbox startup Works as MCP server for AI agents
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	6 −1 (down) since last check	Not checked yet no change since last check
Trust Flow (Majestic)	11	0
Citation Flow (Majestic)	18	6
Referring domains (Majestic)	2275	2

4 details filled in for both companies.

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