To spell check in Outlook open your draft, run Editor or Spelling, review each suggestion, then send once the language and dictionary both look right.
Misspellings in email feel small until they land in a boss’s inbox, a job application, or a customer thread. Outlook can catch most of them, but the controls often sit in different places depending on the version you use. New Outlook, classic Outlook, Outlook for Mac, and Outlook on the web don’t share the same menus.
This walkthrough shows clicks, settings that change what gets flagged, and fixes when spell check goes silent. You’ll finish with a short checklist you can keep beside your Send button.
Spell Check Locations By Outlook Version
| Outlook Version | Where Spell Check Lives | What You’ll See |
|---|---|---|
| Classic Outlook for Windows (desktop) | Message tab → Editor/Spelling; options under File → Options → Mail | Red underlines as you type, plus a review pane when you run Spelling |
| New Outlook for Windows | Compose window → … menu → Editor → Editor Settings | Inline underlines, plus a right-side Editor panel |
| Outlook for Mac | Edit menu → Spelling and Grammar; preferences under Outlook → Settings | Underlines, plus a step-through checker |
| Outlook on the web (work or school) | Depends on tenant; often your browser’s spell checker | Browser underlines and right-click suggestions |
| Outlook.com (personal) | Browser spell checker, plus any installed writing extension | Browser suggestions in the compose box |
| Outlook for iOS | iOS typing and text replacement settings | Typing suggestions and autocorrect |
| Outlook for Android | Gboard or typing settings; device language settings | Typing suggestions and autocorrect |
| Shared mailbox or delegated send | Same as your client, plus account language choices | Flags can follow the language tied to the account |
How Do You Spell Check in Outlook?
If you want the quickest path, start inside a draft message and trigger the checker. Outlook works best when you do two passes: glance at underlines while you type, then run the full checker right before you send. That second pass catches words you may have skipped.
If you’re stuck on how do you spell check in outlook?, run the checker once, then turn on the send-time check.
Classic Outlook For Windows Desktop
- Open a new email or reply.
- On the ribbon, pick Message.
- Select Editor (or Spelling & Grammar in older builds).
- Work through the suggestions one by one: Change, Ignore, or Add to Dictionary.
- Close the pane when Outlook stops finding issues.
Shortcut fans can press F7 in a draft to run the checker. If nothing appears, click back into the message body first, then press F7 again.
New Outlook For Windows
- Start a new message.
- Select the … menu in the compose window.
- Choose Editor, then review spelling suggestions.
- Open Editor Settings to choose languages and toggles.
In new Outlook, switch off grammar checks in Editor Settings if you only want spelling.
Outlook For Mac
- Open a draft email.
- From the menu bar, go to Edit → Spelling and Grammar.
- Pick Check Document Now (wording can vary by macOS version).
- Accept or skip each suggestion, then close the checker.
On Mac, a lot of spell checking comes from macOS itself. If you switch typing languages, macOS can follow that change inside Outlook too.
Outlook On The Web And Outlook.com
Web Outlook often relies on your browser’s spell checker. If you see no underlines, open your browser settings and turn on spell check for the language you write in. In Chrome and Edge, you can set a primary language and add more. In Firefox, check the spelling options under Settings.
If you work in multiple languages, keep one as your main spell check language and add the second as an extra. That cuts down on false flags for names and place terms.
Spell Check In Outlook Settings That Change Results
Spell check is not just a button. A few switches decide whether Outlook checks as you type, whether it runs a check before sending, and what language rules apply to the message you’re writing. Set these once, then your daily writing gets easier.
Turn On “Check Spelling Before Sending”
Classic Outlook for Windows includes a send-time check that acts like a final gate. If you want it on, open the Mail options and tick the box that forces a check before Outlook sends the message. A UW–Milwaukee IT note shows the setting at Set spell check before you send.
That send-time check can slow you down if you fire off lots of short replies. If that’s your day, keep “check as you type” on, and use the send-time check only for high-stakes emails.
Pick The Right Proofing Language
When Outlook thinks you’re writing in the wrong language, it marks half your sentence as misspelled. In new Outlook, you can add proofing languages in Editor Settings. In classic Outlook, the proofing language follows Office language choices and any language you set on selected text.
If you mix English with names, product codes, or another language, add common terms to your dictionary. That keeps them from getting underlined each time.
Use The Dictionary The Right Way
- Add to dictionary is best for names, team terms, and brand words you type a lot.
- Ignore once is safer for one-off codes, invoice IDs, or a random file name.
- AutoCorrect is handy for your own repeat typos. Fix it once, then Outlook patches it each time.
Be picky with “Add to dictionary.” If you add a misspelling by mistake, Outlook will stop flagging it. If you notice that happening, open your custom dictionary and remove the bad entry.
Reset A Checker That Learned Bad Habits
If you clicked Ignore on a word and want Outlook to flag it again, you can force a recheck. A Stanford University IT page can jog your memory about menu paths: Check spelling in Microsoft 365 apps. In classic Outlook, a reset sits under Mail options and the spelling settings area.
After a reset, re-open the draft you care about and run Editor again. You should see the ignored items return.
Why Spell Check Sometimes Stops Working
When spell check fails, it’s usually one of three things: the message body is not in focus, the language is wrong, or something else is doing the checking instead. Pin the symptom first, then pick the fix that matches.
Start by checking whether you’re using desktop, web, or mobile right now, since each has a different spell checker setup.
| What You Notice | Most Likely Cause | Fix That Works |
|---|---|---|
| No red underlines at all | Check-as-you-type is off, or the browser spell checker is off | Turn on spelling in Outlook options or your browser language settings |
| Underlines show, but no suggestions | Editor panel is blocked, or the message area lost focus | Click inside the message body, then open Editor again |
| Most words are flagged as wrong | Proofing language mismatch | Set the message language to your writing language, then rerun the checker |
| Names keep getting flagged | Dictionary doesn’t include your common terms | Add correct names to dictionary; ignore one-off strings |
| Spell check runs, but misses obvious typos | A word was ignored earlier, or the custom dictionary contains the typo | Reset the checker and clean the custom dictionary entries |
| Only replies fail, new emails work | Quoted text and formatting confuse the checker | Type your reply above the quoted thread; run spell check in the reply area only |
| It works in one browser, not another | Browser spell check settings differ | Turn on spell check and add your writing language in that browser |
| Spell check is fine, but AutoCorrect feels wrong | Typing or OS text replacement rules | Review device AutoCorrect settings on your device |
Check The Message Format And Editing Mode
Outlook checks what you’re editing. If you’re typing in a plain-text message, you’ll still get spelling checks, but some Editor features can be limited. If you’re pasting from a PDF or a web page, odd punctuation and hidden characters can confuse suggestions. A quick trick is to paste your text into a plain editor, then paste it back into Outlook.
Look For Add-Ins That Take Over Writing Checks
Some writing add-ins run their own spelling checks. That can be fine, but it can also suppress Outlook’s underlines or replace them with a different style. If you see two sets of underlines, pick one checker and switch the other off to avoid mixed signals.
Confirm You’re Not Editing The Subject Line Only
Outlook can spell check the subject line, yet it won’t help you much if the cursor is stuck there. Click into the message body, type a few words, and see if underlines appear.
More Ways To Spell Check In Outlook Before You Send
When you’re rushing, spell check can feel like a speed bump. These habits keep it quick without missing the rough edges.
Use A Two-Stage Pass
- Stage one: watch for red underlines as you type and fix the easy ones.
- Stage two: run Editor or Spelling once right before sending.
This pattern keeps you from losing your train of thought mid-sentence, yet you catch the typo that slipped in during a last-second edit.
Keep A “Names List” In Your Dictionary
If you email the same people and clients, add their names once. Do the same for product names and internal terms. That stops Outlook from nagging you on each message, and it keeps your eyes on real mistakes.
Use Read Aloud Or A Slow Scroll
Spell check catches typos, not tone. A slow scroll helps you spot missing words, doubled words, and awkward breaks. Listening once can reveal errors your eyes miss.
Send A Test To Yourself For High-Stakes Messages
When the email carries a file, a link, or a time, send it to yourself first. You’ll see it in the same layout the recipient sees. Then you can fix spacing, bullet alignment, and the subject line before the real send.
One-Page Checklist For Clean Outlook Emails
Copy this list into a note app or pin it. It’s short on purpose, so you’ll use it.
- Write the subject last, after the body is done.
- Scan the greeting and the first sentence for names and dates.
- Run Editor or Spelling, then accept only changes you agree with.
- Check the proofing language if lots of words are underlined.
- Re-read the last two lines; that’s where typos hide when you rush.
- Confirm attachments are attached and links open the right page.
- Send to yourself when the message has deadlines or numbers.
If you came here asking “how do you spell check in outlook?”, start with the version table near the top, follow the steps for your device, then set the send-time check once so you don’t need to think about it again.