ColdCheck: Writing That Sounds Like You

Tracking since Apr 7, 2026.

Changelog

• Apr 19, 2026
  description

  ColdCheck learns how you write and generates messages that match your voice so you can skip the blank screen and send drafts that actually sound like you.
  
  HOW IT WORKS
  
  Train your voice: Provide a few examples of emails you've written. ColdCheck analyzes your style: sentence length, tone, vocabulary, and creates a writing fingerprint.
  
  Describe what you need: Open the side panel on Gmail, Outlook, HubSpot, or LinkedIn. Tell ColdCheck what you want to say in plain language.
  
  Get a draft in seconds: ColdCheck generates a message in your voice. Insert it directly into your compose window, or copy and paste.
  
  FEATURES
  
  Works where you write: Side panel opens alongside Gmail, Outlook, HubSpot, and LinkedIn. No tab switching.
  Smart reply detection: Automatically reads email threads and suggests quick reply options.
  Refine in one click: Make drafts shorter, more professional, friendlier, or clearer.
  Edit inline: Tweak any draft directly in the side panel before inserting.
  LinkedIn posts: Generate LinkedIn feed posts in your voice, with ideal length guidance.
  Learns as you go: Every edit and approved draft improves future suggestions.
  
  PRIVACY
  
  ColdCheck stores writing style patterns as numerical embeddings, not your raw text. The extension only accesses compose window content when you request a draft. No inbox access, no browsing history, no data sold to third parties. See our full privacy policy at https://app.coldcheck.ai/privacy.
  
  GETTING STARTED
  
  Sign up at https://app.coldcheck.ai, add a few writing samples, then open the extension on any supported page. 5 free drafts per month, no credit card required.

  ColdCheck learns how you write and generates messages that match your voice so you can skip the blank screen and send drafts that actually sound like you.
  
  HOW IT WORKS
  
  Train your voice: Provide a few examples of emails you've written. ColdCheck analyzes your style -- sentence length, tone, vocabulary -- and creates a writing fingerprint.
  
  Describe what you need: Open the side panel on Gmail, Outlook, HubSpot, or LinkedIn. Tell ColdCheck what you want to say in plain language.
  
  Get a draft in seconds: ColdCheck generates a message in your voice. Insert it directly into your compose window, or copy and paste.
  
  FEATURES
  
  Works where you write: Side panel opens alongside Gmail, Outlook, HubSpot, and LinkedIn. No tab switching.
  
  Smart reply suggestions: Reads email threads and generates contextual reply options with one click.
  
  Stop generation: Cancel a draft mid-stream if you change your mind.
  
  Refine in one click: Make drafts shorter, more professional, friendlier, or clearer.
  
  Edit inline: Tweak any draft directly in the side panel before inserting.
  
  Coaching tips: Get contextual writing tips based on your patterns.
  
  Relationship notes: See relationship context for recipients while composing.
  
  Contact documents: View documents linked to your contacts directly in the side panel.
  
  LinkedIn posts: Generate LinkedIn feed posts in your voice, with ideal length guidance.
  
  Learns as you go: Every edit and approved draft improves future suggestions.
  
  PRIVACY
  
  ColdCheck stores writing style patterns as numerical embeddings, not your raw text. The extension only accesses compose window content when you request a draft. No inbox access, no browsing history, no data sold to third parties. See our full privacy policy at https://app.coldcheck.ai/privacy.
  
  GETTING STARTED
  
  Sign up at https://app.coldcheck.ai, add a few writing samples, then open the extension on any supported page. 5 free drafts per month, no credit card required.

Permissions & access

Permissions

activeTabtabsstoragesidePanelidentityscripting

Host access

https://mail.google.com/*, https://outlook.office365.com/*, https://outlook.office.com/*, https://outlook.live.com/*, https://www.linkedin.com/*, https://app.hubspot.com/*, https://app-na2.hubspot.com/*

Screenshots

Similar extensions

Alternatives to ColdCheck: Writing That Sounds Like You, ranked by description similarity.

SmartDraft AI - Your Writing Assistant

Polish, rewrite, and respond to messages anywhere using AI — from emails to chats.

—

ToneClone: AI Writer in Your Voice - Gmail, LinkedIn, Slack, Email & More

Write emails, LinkedIn posts & messages 10x faster with AI-without sounding robotic. Learns your style. Works everywhere. Free plan.

18

★ 5.0

DraftMate — AI Email Assistant

Draft email replies instantly with Claude AI. Works in Gmail and Outlook.

6

★ 5.0

Email Whisperer - GPT AI Email Writer

Email Whisperer - Write emails with ai

57

★ 5.0

Quillbot: AI Writing Assistant to Grammar Check, Paraphrase & Translate

Write better emails, essays and messages with Quillbot's Grammar Checker, Paraphrasing Tool, Generative AI, Summarizer and more!

5.0M

★ 4.7

Help Me Write - Grammar Checker and Paraphrase Tool for Google Chrome™

Select text to improve grammar, paraphrase sentences, and adjust tone instantly. Simple AI extension powered by Gemini

160

★ 5.0

SuggestMe AI - Free Reply Generator

Free AI reply generator for emails and chats. Write faster on any website.

5

ChatGPT for Gmail by cloudHQ

Automatically write emails using ChatGPT for Gmail

30.0K

★ 4.4