Email tool comparison
ForthWrite vs Gmail's Gemini
Built into Gmail. Generic on purpose.Here's where each tool wins, and where the depth-on-voice differentiator actually matters.
ForthWrite
A writing platform for people who care how their email reads. Voice matching on every tier; closed-loop edit supervision on Standard+; auto-draft, batch, and Prompt Lab on Pro. 9-provider BYOK.
Where we win
- Closed-loop edit supervision (compare drafts to what you sent)
- Measurable improvement curve on the dashboard
- 9-provider BYOK on Standard and Pro
- Standalone web compose surface in the browser
- Free tier includes voice matching (not just basic drafting)
Pricing: Standard $18/mo, Pro $36/mo. BYOK saves ~17%.
Best for: Professionals who want their email to keep sounding like them - and want to see the improvement curve.
Gmail's Gemini
Google's native AI drafting feature inside Gmail. Free for personal accounts, paid for Workspace.
Where they win
- Native to Gmail - zero install, zero account creation
- Free for personal Gmail users in supported regions
- Improving fast with each Gemini model release
- Tone/style personalization for paid Workspace + AI Plus/Pro/Ultra users (May 2026)
What they don't do (or charge extra for)
- Gmail-only - no Outlook, no other clients, no standalone surface
- No closed-loop learning: it doesn't compare drafts to what you actually sent
- Voice personalization is gated to paid Workspace + AI tiers in supported regions only
- Single-provider - you get Gemini whether it's the right model for the email or not
- Outputs read recognizably as Gemini in your sent folder
Pricing: Free for personal Gmail; tone/style personalization requires Workspace AI Plus / Pro / Ultra (paid).
Best for: Personal Gmail users who want a generic AI draft fast and don't care whether it sounds like them.
Head-to-head
The product-behavior comparison, not the marketing-page comparison.
ForthWrite is the depth play for people who care how their email reads.
Gemini wins distribution. We win depth. Gemini's job is to be good enough for the median user; ours is to sound like "you" a month from now, not like every other "Help Me Write" reply your contacts are receiving.
The mechanism is different. Gemini analyzes your past emails to draft a new one. ForthWrite captures every edit you make, compares the drafted version to what you actually sent, and uses the gap as a training signal. The dashboard shows the curve climbing as drafts get closer to how you actually write.
Gemini is Gmail-only. ForthWrite works in Gmail, Outlook, and a standalone web compose surface - wherever your email actually lives. And on Standard or Pro you pick the model (Claude, GPT, Grok, and six others) rather than getting whatever Google ships this quarter.
See the improvement curve for yourself
Free tier includes voice matching. No credit card, no API key. Compare your first ForthWrite draft to your first Gmail's Gemini draft and decide for yourself.