AI email builder that applies your brand automatically
AI humanizer for multilingual writing with best-in-class Japanese support
Stage
Not given
Startup
Founded
Not given
2026
Based in
Not given
HK
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.
Free: 500 words/day humanize + unlimited detector (no credit card required); Basic: $9.99/month for 50,000 words/month + 30-day history + priority email support; Pro: $19.99/month for 250,000 words/month + academic mode + 90-day history + priority API queue. Student discount: 50% off annual plans wi
Key features
Brand book PDF upload with automatic style extraction
AI text humanizer with casual, academic, and business modes
Free AI content detector with ai_score, perplexity, and burstiness metrics
Morphology-aware Japanese rewriting with conjugation and particle control
Citation and technical term preservation in academic mode
Three parallel rewrites scored by separate detector model
Five-step intensity slider for faithfulness vs. AI-fingerprint tradeoff
History and re-rewrite capability (30 or 90 days depending on plan)
Second-pass academic polish with Claude 3.5 Haiku on Pro plan
Support for English, Japanese, Korean, German, French, Spanish, Portuguese, and Chinese
Tested against GPTZero, Turnitin, Originality.ai, and Copyleaks
What makes it different
No coding or design skills required
Build first email in 15 minutes
164 templates available free forever
Best-in-class Japanese support with morphology-aware morpheme-level tuning, unlike generic humanizers
Separate AI detector scores rewrites to guarantee the most natural result
Preserves academic citations, figures, tables, and technical terminology verbatim
Five-step granular intensity control to trade off faithfulness versus AI-fingerprint removal
Independent developer with transparent privacy: no model training on user text, fixed deletion schedule
Mailvex
Suikou AI