How to Email a Word Document as an Attachment | Two Working Routes

The most reliable method for sending a Word document as an attachment works the same across Windows, Mac, phones, and tablets: save the .docx file somewhere you can find it, open your email app, click the paperclip button, and select the file.

One wrong tap and you send a link when you meant to send the file itself. Or you attach a .pdf when the recipient needs the editable original. Or the button simply doesn’t appear because you’re using Word in a browser. The fix for each of these depends on whether you’re on the desktop app or the web version, and which email client you use. Here is the exact sequence for both routes, with the traps named so you don’t hit them.

Before You Start: The Quick Compatibility Check

The built-in “Send as Attachment” feature inside Microsoft Word only works with desktop versions — Word 2016, 2019, 2021, or Microsoft 365 — and only when a MAPI-compliant email program (Microsoft Outlook on a PC, or the Mail app on Mac) is installed and configured. If you use Gmail in a browser, Thunderbird, or any web-only email client, the Word Share button simply won’t appear. The universal drag-and-drop method works everywhere else.

Most people searching for “how to email a Word document as an attachment” hit this exact gate: they open Word Online, look for the attachment button, and it’s not there. The distinction between desktop Word and the browser version is the single biggest source of confusion — so let’s start with the route that works on everything.

Method A: The Universal Attachment Route (Works on Every Device)

This method works on Windows, Mac, Chromebooks, iPhones, Android phones, and any tablet. You do not need Word installed at all.

1. Locate the saved Word file on your device — in your Documents folder, Desktop, or Downloads folder.
2. Open your email application (Gmail in a browser, Outlook app, Apple Mail, etc.) and click Compose or New Email.
3. Find the Attach File button — usually a paperclip icon on the toolbar near the message body.
4. Click the paperclip, browse to the Word document, and select it.
5. The file name appears at the bottom of the email window. Fill in the recipient, subject, and message, then click Send.

Alternate drag-and-drop shortcut: Open your email compose window and your file manager side by side. Grab the .docx file and drag it directly into the email body. It attaches instantly on most modern email clients.

The You see the document’s name and a file icon (usually a blue W for Word) in the attachment area before you send.

Method B: The One-Click Word Desktop Route (Windows and Mac Only)

This method is faster — it opens your email automatically with the document already attached — but only works with the desktop version of Microsoft Word and a configured email client.

1. Open the Word document you want to send.
2. Click the File tab in the top-left corner.
3. Select Share from the left menu.
4. Click Send as Attachment (the .docx option) or Send as PDF (if the document should not be edited).
5. Your default email client opens with the document attached and the subject line set to the file name.
6. Type the recipient’s address, add any message, and click Send.

Mac users: On macOS, the path is File > Share > Email Document or Send Document, depending on your Word version. The rest is the same.

The A new email composition window opens automatically with the document listed in the attachment field. If nothing opens, you likely do not have a MAPI-compliant email client set up — switch to Method A.

Sending a Word Document as a PDF: When to Use It

Sending a document as a .docx file lets the recipient edit it freely. Sending it as a PDF locks the formatting and content. Use PDF when the document is final — a resume, a contract, a report — or when you are unsure whether the recipient has Word installed. In Word’s Share menu, simply choose Send as PDF instead of Send as Attachment. The file size may be slightly smaller too.

Common Attachment Mistakes and How to Avoid Them

Three errors account for nearly all failed attempts to email a Word document as an attachment.

1. The “Share” Button Does Nothing

This happens when you are using Word for the web (Office.com, Word Online) rather than the desktop app. The web version’s Share menu only lets you send a link or a OneDrive invitation — it does not attach the file to an email. The fix: download the file to your computer first (File > Save As > Download a Copy), then use Method A above to attach it from your local drive.

2. The File Is Too Large

Most email services cap attachments at 20–25 MB. A Word document with embedded images, charts, or scanned pages can blow past that limit. When it does, Outlook and Gmail will suggest uploading the file to OneDrive or Google Drive instead, which creates a shareable link rather than a true attachment. If you need to keep it as an attachment, compress the images inside Word (File > Compress Pictures) or split the document into smaller sections.

3. The Wrong Version of the Document Gets Sent

A Word document can have multiple versions in different folders — “Report_FINAL.docx” and “Report_FINAL_v2.docx” and “Report_ACTUALLY_FINAL.docx.” Before attaching, glance at the file name and the “Date Modified” column in your file browser. Better yet, open the file from within Word and use File > Share > Send as Attachment — that route attaches whatever document you currently have open, eliminating the folder-mistake risk entirely.

What to Do When the Recipient Can’t Open the File

If your recipient says the attachment looks garbled or won’t open, the document may contain fonts, formatting, or features not available in their version of Word. The fastest fix: resend as a PDF. That preserves the layout exactly. If they need the editable file, save a copy using File > Save As > Browse and choose the Word 97-2003 Document (.doc) format — it strips newer features and opens on nearly any version of Word.