Your quick scribble,in your usual voice.
SAlexSlack
Good for a 3pm sync?
LMikeLINE
Lunch today?
GMr. LeeGmail
Please review the quote
MMomMessages
Coming home this weekend?
✨Polite
😊Casual
🤝Team
👋Friends
⌘
@
↩
✦
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.
Download for MacSee what it does→
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
Team
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
Here's a version that stays polite without overpromising. Subject: \[Re: Project Name\] Deadline change — confirmed Dear \[Company Name\], Attn: \[Contact Name\], Thank you for your continued support. This is \[Your Name\] from \[Your Company\]. Thank you for your message. Regarding the schedule, delivery by tomorrow, \[MM/DD\], will be no problem on our end. We apologize for any inconvenience and kindly ask for your continued arrangement. This is a quick note to confirm our acceptance of the deadline. Since the right wording really depends on your relationship with them, could you tell me a bit about who they are?
Henji (your warmth, just the point)
0 chars
Tomorrow? Yeah, cut me some slack 😥 But the day after, I'll turn in something that makes you go "oh!" — just give me a tiny bit more time, yeah?
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
- Reads your past messages during setup
- Learns how you write, right away
- Reply in your voice from day one
- Learns your turns of phrase as you go
- Remembers your edits and carries them forward
- Every edit makes it more like you
- Prefers “Will do” over “OK”
- Softens the lead-in before a request
- Ends on a warmer note
- Switch agents like "Customer" or "Boss"
- Tone adjusts automatically per recipient
- From formal to casual, effortlessly
今日
Can we move tomorrow's standup to 3pm? Please also share the final deck.
返信
Sound like yourself from day one
Gets better the more you use it
Saved to memory
The right "you" for every recipient
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.
Frequently asked questions
What is Henji?
A macOS app that turns your quick scribbles or keywords into replies written in your own voice.
Which devices can I use it on?
Which apps does it work with?
How does it create replies?
Can I use it for free?
Is my data stored on a server?
How does style learning work?
Start free, and make replying easy.
Installs in 30 seconds — no credit card required.