How to Search in the Outlook App (Desktop, Web & Mobile)
Whether you're using Outlook on a desktop, in a browser, or on your phone, finding a specific email shouldn't be hard. But Outlook's search works differently across versions, and most people don't know about the operators, filters, and shortcuts that can make it more useful. Here's how to search your Outlook inbox in every version — and what to do when native search falls short.
How to search your inbox in Outlook
The basics are the same everywhere: click (or tap) the search bar, type what you're looking for, and press Enter. But where the search bar is, how it works, and what options you have varies by version.
Classic Outlook for Windows
The search bar sits at the top of your inbox. Click it or press Ctrl+E to activate search. By default, classic Outlook searches only the current folder — so if you're in your Inbox, it won't find emails in Sent Items, Drafts, or subfolders.
To search all folders: click the search bar, then look for the Search tab that appears in the ribbon. Click All Mailboxes to widen the scope. You can also click Current Folder, All Subfolders, or All Outlook Items depending on how wide a net you want to cast.
Classic Outlook uses a local Windows Search index on your machine. If search isn't returning results, the index may need rebuilding — see our guide on fixing Outlook search when it's not working.
New Outlook for Windows
New Outlook has the search bar front and center at the top. Press Ctrl+E or just start typing. When you click the search bar, New Outlook shows recent searches and suggested contacts.
The key difference: New Outlook uses server-side search instead of a local index. Your search runs against Microsoft's servers, which means you can find emails even if they haven't been synced locally. The downside: server-side search has known issues with missing older emails and can't always sort results by date.
After running a search, use the Filter button above the results to narrow by sender, date range, attachments, or folder.
Outlook on the web
At outlook.office.com or outlook.live.com, the search bar is at the top of the page. Click it and type your query. The search scope defaults to the current folder — click All in the search scope dropdown to search your entire mailbox.
Outlook on the web supports the same search operators as the desktop versions (see the operator table below). After searching, use the Filters panel on the left to narrow by date, sender, or attachment status.
Outlook mobile (iOS and Android)
Tap the search icon (magnifying glass) at the top of the app. Outlook mobile searches across all folders by default — no scope change needed. It also shows frequently contacted people and recent searches as suggestions.
Mobile search is more limited than desktop: it doesn't support all operators, and results are sorted by relevance with no option to re-sort by date. If you need precise control, use the desktop or web version.
Outlook search operators and filters
Instead of just typing keywords, you can use search operators to target specific parts of your emails. These work in classic Outlook, New Outlook, and Outlook on the web.
| Operator | What it does | Example |
|---|---|---|
from: |
Emails from a specific sender | from:sarah |
to: |
Emails sent to a specific person | to:finance |
subject: |
Search subject lines only | subject:invoice |
hasattachment:yes |
Only emails with attachments | hasattachment:yes budget |
received:today |
Emails received today | received:today from:boss |
received:last week |
Emails from the past week | received:last week project |
You can combine operators: from:sarah subject:budget hasattachment:yes finds emails from Sarah with "budget" in the subject that have attachments.
In classic Outlook, you can also use AND, OR, and NOT to combine terms: budget AND Q3 NOT draft. These Boolean operators don't work reliably in New Outlook or Outlook on the web.
Keyboard shortcuts for search
- Ctrl+E (Windows) / Cmd+E (Mac): Open the search bar
- Ctrl+Shift+F (classic Outlook): Open the Advanced Find dialog for multi-field search
- Esc: Close search and return to your mailbox
- Enter: Execute the search
The limitations you'll run into
Outlook search works well for simple queries — a sender's name, a keyword in the subject line. But it has real limitations that trip people up:
- Keyword-only matching. Outlook searches for exact words. If the email says "booking confirmation" and you search "hotel reservation," Outlook won't find it — even though they mean the same thing.
- Prefix matching only. Outlook matches from the start of words. Search "budget" and you'll find "budgeting" but search "dget" and you'll find nothing.
- Short numbers are ignored. Microsoft documents that numbers under five digits are skipped by the indexer. Searching "4521" won't find that string in an email body.
- New Outlook drops older results. Server-side search silently stops returning results when there are "too many" matches — which means older emails may not appear at all.
- No date sorting in New Outlook. Results are sorted by "relevance" with limited ability to re-sort by date.
When you need more than keyword search
If you regularly can't find emails you know exist, or if you need to search by meaning rather than exact keywords, Outlook's built-in search may not be enough. Inbox Search is a free Outlook add-in that adds semantic search — it uses on-device AI to understand what you mean, not just the words you type.
Search "travel expenses from the Berlin trip" and it finds the relevant emails even if none of them contain those exact words. It runs entirely on your device (no email data leaves your machine), works with every version of Outlook, and installs in under a minute from Microsoft Marketplace.
For a detailed comparison with other search tools, see Best Outlook Search Tools Compared.
Search your Outlook inbox by meaning, not just keywords.
Inbox Search is a free Outlook add-in with on-device AI. Find any email, even when you don't remember the exact words.
Install Free from Microsoft MarketplaceFrequently asked questions
How do I search my inbox in Outlook? Click the search bar at the top of the Outlook window (or press Ctrl+E), type your search term, and press Enter. By default, Outlook searches only the current folder. To search all folders, click the search scope dropdown and select "All Mailboxes" or "All Folders." You can narrow results using filters for sender, date range, attachments, and more.
What search operators work in Outlook? Outlook supports several search operators: from:name (emails from a specific sender), to:name (emails to a specific recipient), subject:keyword (search subject lines only), hasattachment:yes (only emails with attachments), and received:today or received:last week (date filters). In classic Outlook, you can also combine terms with AND, OR, and NOT.
Why can't I find emails I know exist in Outlook? Outlook's built-in search has several known limitations: it only matches from the beginning of words (not the middle), it ignores numbers under five digits, it silently drops older emails when there are too many results, and New Outlook's server-side search can miss messages entirely. If you're consistently missing emails, your search scope may be set too narrow, or the search index may need rebuilding.