How To Add Grammarly In Outlook | Set It Up Right

If Outlook is where half your workday disappears, clean writing saves time. Grammarly can catch slips, tighten sentences, and smooth awkward phrasing while you write emails. The setup is not hard, but the path changes a bit based on which Outlook version you use.

That version check matters. New Outlook, classic Outlook, Outlook on the web, and Outlook for Mac do not place apps in the same spot. Grammarly has also shifted away from its older Microsoft Office add-in, so many older tutorials send readers down a dead end. This walkthrough keeps you on the current path.

How To Add Grammarly In Outlook On Each Outlook Version

For most people, the cleanest route is the Grammarly desktop app. Install it, sign in, then open Outlook. Once it is active, Grammarly can show suggestions as you type in email drafts. If your workplace uses managed add-ins, you may also see app controls inside Outlook itself.

Start With A Fast Version Check

Open Outlook and note which app you have:

• New Outlook for Windows: a modern layout with the More apps area on the ribbon or side rail.
• Classic Outlook for Windows: the long-running desktop app with the Home tab and older ribbon layout.
• Outlook on the web: Outlook in your browser after you sign in to Microsoft 365 or Outlook.com.
• Outlook for Mac: the Mac desktop app.

If you are not sure, the top bar usually gives it away. New Outlook and web Outlook lean on app menus. Classic Outlook leans on ribbon buttons. Mac keeps its own menu style.

Install Grammarly On Windows Or Mac

1. Go to Grammarly and download the desktop app for your computer.
2. Run the installer and finish the sign-in step.
3. Close Outlook if it is already open.
4. Reopen Outlook and start a new message.
5. Type a few lines and wait for Grammarly to load suggestions.

On a good install, you will spot Grammarly while drafting, not after you paste text somewhere else. That is the whole point: less tab switching, less cleanup at the end.

Use Outlook’s App Menu When Your Mailbox Shows Add-Ins

Some Outlook setups also let you manage mail apps inside Outlook. In new Outlook, that path usually sits under More apps > Add apps. In classic Outlook, it may appear as All Apps or Get Add-ins on the ribbon. In Outlook on the web, you can reach the same area from the app bar or message ribbon.

If Grammarly is available to your account through that menu, add it there and pin it if you want faster access while reading or composing mail. If it does not appear, stick with the Grammarly desktop app. That is the main route Grammarly points users to right now.

Outlook Setup	Best Grammarly Path	What You Should See
New Outlook for Windows	Desktop app first; app menu if your account shows it	Suggestions while drafting, plus app access from More apps
Classic Outlook for Windows	Desktop app; ribbon add-ins vary by build	Suggestions in compose view and app controls on Home or Message tabs
Outlook on the web	App menu inside Outlook on the web	Add apps area on the ribbon or side rail
Outlook for Mac	Desktop app for Mac	Suggestions while writing in the Mac app
Work or school mailbox	Desktop app, or an app pushed by your IT admin	Grammarly may already be present in the mailbox
Personal Microsoft account	Desktop app plus any store app your mailbox allows	Normal sign-in and draft checks with no admin step
Older Office build	Update Office, then install Grammarly again	Add-ins and draft checks become easier to load
Offline drafting	Limited app behavior until your connection returns	Some app controls may not load in Outlook

What The Current Setup Looks Like In Practice

Grammarly’s own Grammarly for Microsoft Outlook page points readers to the desktop app for Windows and Mac. Microsoft’s Use add-ins in Outlook instructions show where the app menus sit in new Outlook, classic Outlook, and Outlook on the web. Put those two pieces together and the setup starts to make sense.

Here is the plain reading of it: Grammarly checks your writing through its desktop app on Windows and Mac, while Outlook itself handles store-based apps through its own add-in menus. That split is why old one-size-fits-all tutorials feel messy.

If You Used The Older Office Add-In Before

You are not misremembering anything. There used to be a separate Grammarly for Microsoft Office add-in. Grammarly now says that product is being retired and points users to newer installs instead. Their notice, Grammarly for Microsoft Office will be discontinued soon, clears that up.

That change is why reinstalling the old add-in often wastes an afternoon. If your older tutorial mentions a stand-alone Office plug-in, skip it and move to the desktop app unless your workplace has its own locked-down setup.

What To Check After Installation

Once Grammarly is live in Outlook, do a short test before you trust it for client mail:

• Open a new draft and type a sentence with an easy typo.
• Add a long, clunky sentence and wait for a rewrite or clarity prompt.
• Reply to an email, not just a brand-new draft, to make sure it appears there too.
• Open a second mailbox if you use one and test that draft window as well.

This quick pass tells you whether Grammarly is active only in one spot or across the places where you write most. It also shows whether a work mailbox has stricter app rules than your main account.

Problem	Likely Cause	Fix
No Grammarly suggestions in drafts	Outlook was open during install	Quit Outlook, reopen it, then test again
App menu does not show Grammarly	Mailbox does not offer that app	Use the Grammarly desktop app instead
Nothing appears in a work mailbox	Admin rules limit apps	Ask your IT admin whether Grammarly is allowed
Checks work in one Outlook version only	You switched between classic and new Outlook	Test the version you use each day and pin apps there
Add-ins vanish while offline	Outlook app menus need a live connection	Reconnect, then reopen the draft window
Older Office install acts flaky	Build is out of date	Update Office, then reinstall Grammarly

Small Setup Choices That Make Grammarly More Useful In Outlook

Pin the app if Outlook offers that option. That saves a few clicks each time you open a draft. Also sign in to the same Grammarly account across devices, so your settings, tone choices, and personal dictionary stay in step.

Next, pay attention to where you write the emails that matter most. Some people draft in the preview pane, others pop messages into a separate window. Test both. A setup that feels broken is often just active in one compose view and not the other.

If you write from a shared mailbox, there is one more wrinkle. Outlook add-ins are often tied to your primary mailbox, not the shared one. In that case, the desktop app route is usually the smoother choice.

When Grammarly Still Won’t Show In Outlook

If nothing appears after a clean install, run through this short list:

1. Update Outlook or Microsoft 365.
2. Restart your computer.
3. Sign out of Grammarly, then sign back in.
4. Switch from classic Outlook to new Outlook, or the other way around, and test again.
5. Try Outlook on the web to see whether the issue is tied to one app only.

That last check tells you a lot. If Grammarly works on the web but not in your desktop app, the snag is usually your Outlook build or local install. If it fails everywhere, your Grammarly sign-in or account permissions need a closer check.

Once it is working, leave it alone. Outlook and Microsoft 365 change often, and too much fiddling can break a setup that was fine five minutes ago. Install it once, test it in the places you write, and get back to your inbox.