Mailvex vs Opsis

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

Mailvex compared with Opsis
Detail	Mailvex	Opsis
What it does	AI email builder that applies your brand automatically	Autocomplete and AI assistant for Mac and Windows, built on a private account of your work
Stage	Not given	Startup
Founded	Not given	2026
Based in	Not given	AU
Pricing model	Freemium	Freemium
Pricing	Free plan with no time limit; Starter $12/month or $10/month billed yearly; Pro $27/month or $23/month billed yearly; Agency $119/month or $99/month billed yearly.	Not given
Key features	Brand book PDF upload with automatic style extraction	Autocomplete with Tab to accept drafts Error detection and fact-checking Cross-app integration Source attribution for every suggestion Context-aware AI assistance One-click pause and privacy control Encrypted data storage Read-only app connections Natural writing style matching
What makes it different	No coding or design skills required Build first email in 15 minutes 164 templates available free forever	Finishes sentences from your actual work history and connected files, not generic AI Shows source for every suggestion so you can verify it before accepting Catches mistakes and contradictions between what you're writing and your work history Works inline in the apps you already use without installation You stay the author with full control over what gets written
Community votes	0	0
DR (Domain Rating by Ahrefs)	9 no change since last check	4 no change since last check
Trust Flow (Majestic)	25	0
Citation Flow (Majestic)	23	12
Referring domains (Majestic)	25	1

4 details filled in for both companies.