Your quick scribble,in your usual voice.

The more you use it, the more it sounds like you. Chats and email — replies get easier every day.

Today

hey! quick one about the deck — any chance it can land today? no worries if it's tight, just let me know 🙏

Message #acme

Fast and to the point for the team

Internal threads keep their pace — warm, but only the essentials.

Not AI-ish. You-ish.

Turning down "Can you get this doc to me by tomorrow?" — politely, while negotiating the deadline.

Generic AI (templated, long)
0 chars
Henji (your warmth, just the point)
0 chars

Learns your voice

Picks up your phrasing from past threads.

Short, to the point

No bloated boilerplate — just a line they can read fast.

Says it without friction

Decline or negotiate while keeping the relationship warm.

So, here's what makes Henji click.

Launch by just selecting text

  • Select a line in Slack or email for an instant draft
  • Fire it up with the ⌘⏎ shortcut
  • Same steps on top of any app
今日
Can we move tomorrow's standup to 3pm? Please also share the final deck.
返信

Sound like yourself from day one

  • Reads your past messages during setup
  • Learns how you write, right away
  • Reply in your voice from day one
Henji

Gets better the more you use it

  • Learns your turns of phrase as you go
  • Remembers your edits and carries them forward
  • Every edit makes it more like you
Saved to memory
  • Prefers “Will do” over “OK”
  • Softens the lead-in before a request
  • Ends on a warmer note

The right "you" for every recipient

  • Switch agents like "Customer" or "Boss"
  • Tone adjusts automatically per recipient
  • From formal to casual, effortlessly
CustomerColleagueBestie

I'm sorry for the trouble. I'll confirm the cause and report back on the status by end of day.

Heads up, they flagged that bug's still not fixed. I'll dig into the cause and get it sorted today.

no bc the bug's still not fixed?? i'm so done 😭💔 lemme jump on it rn, sorted by today, hang tight bestie 🫶💖

It doesn't care which app you use.

Over 2 million Mac apps — and it works in almost all of them.

Slack
Microsoft Teams
Discord
LINE
WhatsApp
Telegram
Messenger
Signal
WeChat
KakaoTalk
Viber
Skype
Google Messages
iMessage
Zoom
Google Chat
Slack
Microsoft Teams
Discord
LINE
WhatsApp
Telegram
Messenger
Signal
WeChat
KakaoTalk
Viber
Skype
Google Messages
iMessage
Zoom
Google Chat
Slack
Microsoft Teams
Discord
LINE
WhatsApp
Telegram
Messenger
Signal
WeChat
KakaoTalk
Viber
Skype
Google Messages
iMessage
Zoom
Google Chat
Slack
Microsoft Teams
Discord
LINE
WhatsApp
Telegram
Messenger
Signal
WeChat
KakaoTalk
Viber
Skype
Google Messages
iMessage
Zoom
Google Chat
X
Instagram
Threads
Facebook
TikTok
Bluesky
Mastodon
Snapchat
Pinterest
LinkedIn
Reddit
Tumblr
Misskey
Twitch
VK
Weibo
QQ
BeReal
X
Instagram
Threads
Facebook
TikTok
Bluesky
Mastodon
Snapchat
Pinterest
LinkedIn
Reddit
Tumblr
Misskey
Twitch
VK
Weibo
QQ
BeReal
X
Instagram
Threads
Facebook
TikTok
Bluesky
Mastodon
Snapchat
Pinterest
LinkedIn
Reddit
Tumblr
Misskey
Twitch
VK
Weibo
QQ
BeReal
X
Instagram
Threads
Facebook
TikTok
Bluesky
Mastodon
Snapchat
Pinterest
LinkedIn
Reddit
Tumblr
Misskey
Twitch
VK
Weibo
QQ
BeReal
Gmail
Outlook
Notion
Google Docs
Google Keep
Evernote
Obsidian
Trello
Asana
Confluence
Jira
WordPress
Todoist
Medium
Coda
Quora
note
Gmail
Outlook
Notion
Google Docs
Google Keep
Evernote
Obsidian
Trello
Asana
Confluence
Jira
WordPress
Todoist
Medium
Coda
Quora
note
Gmail
Outlook
Notion
Google Docs
Google Keep
Evernote
Obsidian
Trello
Asana
Confluence
Jira
WordPress
Todoist
Medium
Coda
Quora
note
Gmail
Outlook
Notion
Google Docs
Google Keep
Evernote
Obsidian
Trello
Asana
Confluence
Jira
WordPress
Todoist
Medium
Coda
Quora
note

Frequently asked questions

A macOS app that turns your quick scribbles or keywords into replies written in your own voice.

Start free, and make replying easy.

Installs in 30 seconds — no credit card required.