Only tool here that scores your email, but the free plan stops at 5 a month. Why?
Scores come from public evidence (vendor pricing pages, help docs, feature pages), checked 2026-10-22. We have not run hands-on tests yet. They are planned, and these scores will be updated. See every source ↓
Most deals die in the inbox. These tools help you write the follow-up that revives them.
How this ranking was scored: desk research, version 1, checked 2026-10-22. We checked each tool against the public checklist below using vendor pricing pages, help-center docs and feature pages. Every point links to its source under “Why each tool scored what it did”. Plan scored: Cheapest plan that can write one follow-up email. All three tools do this on a free plan.
We have not run hands-on tests yet. They are planned with the fixture in tests/follow-up/scenarios.md, and scores will be updated when they are done.
Why each tool scored what it did
Each Quality and Speed check is worth 2 points (2 = verified on the plan scored, 1 = limited, add-on, higher tier or conflicting docs, 0 = not available or not verifiable). Price bands, monthly list price: $0 = 10 · ≤$10 = 9 · ≤$15 = 8 · ≤$20 = 7 · ≤$25 = 6 · ≤$30 = 5 · ≤$40 = 4 · ≤$50 = 3 · ≤$75 = 2 · more = 1.
Quality checklist
Drafts a follow-up from the thread or notes
Scores or coaches the email for reply likelihood
Personalizes from recipient research (web search or prospect data)
Reads the real thread from Gmail or Outlook
Tone control
Speed checklist
First draft right after signup, no setup
Reusable saved prompts, projects or templates
Works inside Gmail or Outlook
Official iOS and Android apps
Usage headroom on the scored plan (2 = not capped, 1 = capped)
1. ClaudeQ 7 · S 8 · P 10 · E 10 → 8.3
Plan scored: Free ($0/mo). Free plan covers one follow-up. claude.com
Quality 7/10
2Drafts a follow-up from the thread or notes. Writes from pasted thread claude.com
0Scores or coaches the email for reply likelihood. No reply-likelihood score claude.com
2Personalizes from recipient research (web search or prospect data). Web search on Free claude.com
1Reads the real thread from Gmail or Outlook. Help Center says Google Workspace connectors (incl. Gmail) are open to all plans; the Gmail connector doc lists paid plans only support.claude.com
2Tone control. User preferences / prompt-set tone claude.com
Speed 8/10
2First draft right after signup, no setup. Free, signup only claude.com
2Reusable saved prompts, projects or templates. Projects on Free claude.com
1Works inside Gmail or Outlook. Claude for Outlook is Pro-only; Gmail is read through a connector, not inside the inbox claude.com
2Official iOS and Android apps. iOS and Android claude.com
1Usage headroom on the scored plan (2 = not capped, 1 = capped). Free usage limits claude.com
Ease 10/10
4Free plan / trial. Free plan covers the task claude.com
2Self-serve, no sales call. Self-serve signup and cancel; no sales call needed for this plan claude.com
2Nothing to install. Runs in the browser; nothing to install claude.com
2Single seat allowed. Can be bought for a single user claude.com
2. ChatGPTQ 7 · S 7 · P 10 · E 10 → 8.1
Plan scored: Free ($0/mo). Free tier covers one follow-up. help.openai.com
Quality 7/10
2Drafts a follow-up from the thread or notes. Writes from pasted thread help.openai.com
0Scores or coaches the email for reply likelihood. No reply-likelihood score help.openai.com
2Personalizes from recipient research (web search or prospect data). Web search on Free help.openai.com
1Reads the real thread from Gmail or Outlook. Gmail app exists; some apps are unavailable on Free help.openai.com
2Tone control. Tone set via custom instructions help.openai.com
Speed 7/10
2First draft right after signup, no setup. Free, signup only help.openai.com
2Reusable saved prompts, projects or templates. Projects on Free help.openai.com
0Works inside Gmail or Outlook. No compose-inside-Gmail/Outlook integration found help.openai.com
2Official iOS and Android apps. iOS and Android chatgpt.com
1Usage headroom on the scored plan (2 = not capped, 1 = capped). Free caps (uploads 3/day) help.openai.com
Ease 10/10
4Free plan / trial. Free plan covers the task help.openai.com
2Self-serve, no sales call. Self-serve signup and cancel; no sales call needed for this plan help.openai.com
2Nothing to install. Runs in the browser; nothing to install help.openai.com
2Single seat allowed. Can be bought for a single user help.openai.com
3. LavenderQ 7 · S 4 · P 10 · E 9 → 7.2
Plan scored: Basic (free) ($0/mo). Basic is free forever (5 analyses and 5 personalizations a month). Starter is $29/mo monthly. lavender.ai
Quality 7/10
1Drafts a follow-up from the thread or notes. 'AI Email Writer' is listed in the plan blocks, but the page does not make clear whether Basic includes it lavender.ai
2Scores or coaches the email for reply likelihood. Scores every email; aim for 90+ lavender.ai
2Personalizes from recipient research (web search or prospect data). Personalization Assistant brings prospect data into the inbox (5/mo on Basic) lavender.ai
2Reads the real thread from Gmail or Outlook. Works in Gmail and Outlook 365 lavender.ai
0Tone control. No tone control documented lavender.ai
Speed 4/10
1First draft right after signup, no setup. Requires installing the Chrome extension lavender.ai
0Reusable saved prompts, projects or templates. Saved templates not documented lavender.ai
2Works inside Gmail or Outlook. Works in Gmail and Outlook lavender.ai
0Official iOS and Android apps. Only 'mobile optimization' scoring; no app lavender.ai
1Usage headroom on the scored plan (2 = not capped, 1 = capped). Basic: 5 emails a month lavender.ai
Ease 9/10
4Free plan / trial. Free forever Basic plan, no card lavender.ai
2Self-serve, no sales call. Self-serve signup and cancel; no sales call needed for this plan lavender.ai
1Nothing to install. Needs a browser extension lavender.ai
2Single seat allowed. Can be bought for a single user lavender.ai
