Stays in context
Turns rushed drafts into clearer team communication.
For Slack
Tighten Slack Drafts Before You Post
Highlight a Slack message draft, see a cleaner version in Grammate, and apply it only when it still sounds like you.
Helpful for project updates, async handoffs, support notes, and messages that need to be concise.
There is many peoples who think writing correctly is not important, but it affect how others see your work and make the message harder to understand.
There are many people who think writing correctly is important, but it affects how others see your work and makes the message easier to understand.
Grammate
Review Panel
Corrected text
There is many peoplesThere are many people who think writing correctly is important, but it affectaffects how others see your work and makemakes the message harder to understand.
Processing correction
Replaced in source
Why it Fits Slack
A practical writing layer for the app you already use.
Keeps edits visible
Lets you keep your voice while checking grammar and readability.
Fits your workflow
Fits short, high-frequency workplace messages where speed matters.
How it Works with Slack
Review first, or replace instantly.
1
Click or Highlight
Click or highlight text in Slack, then use the Grammate balloon beside your selection.
2
Review the Correction
A focused review panel shows what changed, so grammar fixes stay transparent instead of automatic.
3
Replace When Ready
Accept the rewrite only when it matches your intent. One click sends it back into Slack.
1
Click Instant
Select text, click Instant, and Grammate replaces it automatically as soon as the correction is ready.
Local or Cloud
Choose private offline correction, or choose faster setup.
Grammate supports both. Keep text on your own Windows PC with Local Mode, or use Cloud Mode when you want less setup work.
Local Mode
- Runs AI on your own Windows PC.
- Your text stays on your machine for stronger privacy.
- Works offline after local model setup.
- No correction cap once local AI is installed.
- Best for private writing, offline work, and full control.
Cloud Mode
- Sends text to our hosted AI instead of your PC.
- Faster setup with no local model download.
- Usually lighter on your device.
- Paid plans raise your daily cloud correction limit.
- Best for convenience, quick start, and less setup work.
Simple Pricing: Free Local Mode, Paid Cloud Volume
Start free with unlimited local correction. Upgrade only if you want more cloud corrections each day.
Free
Unlimited Local Mode + Daily Cloud Trial
Free
Download Free
- Unlimited Local AI forever
- Up to 20 cloud corrections per day
- Best starting point for Windows users
Starter
More Cloud Corrections for Daily Writing
$1.49
$1.99
/month
Choose Starter
- Up to 150 cloud corrections per day
- Best for email, chat, and short drafts
- Lowest-cost cloud plan
Pro
More Headroom for Long-Form Work
$3.75
$4.99
/month
Choose Pro
- Up to 400 cloud corrections per day
- Better for long-form work
- More headroom for repeat edits
FAQ for Slack
Can Grammate rewrite Slack messages?
Grammate can improve selected Slack draft text and show the revised version before you decide to replace the original.
Is this only for long writing?
No. Grammate is useful for short messages too, especially when you want a fast clarity and grammar pass.
Will my message be sent automatically?
No. Grammate only helps with the selected text. You still decide what to apply and when to send.
Can I use Grammate with Slack in local mode?
Yes. Local mode is available when your local AI provider is configured, which is useful when you want a privacy-focused correction workflow on your own PC.
When should I use cloud mode?
Cloud mode is the easier path when you want faster setup and do not want to manage a local model. It is useful for quick everyday correction work.
Is there a free way to try Grammate?
Yes. Start with the free Windows download, then review the pricing page if you need more cloud capacity or paid plan features.
Will Grammate change text in Slack automatically?
Only if you choose the instant workflow. The review workflow shows the correction first, then you decide whether to replace the selected text.
Try Grammate with Slack
Download the Windows app, select text where you write, and review the correction before replacing it.
Download Grammate