Attachment Issues

How to Send an Email Attachment Larger Than 25 MB in Outlook

Maira Mehtab Sep 21, 2026 869 views

Question details

The user needs to send a file via email, but the file exceeds the standard 25 MB attachment size limit.

Product: Outlook / Email Clients
Device & OS: not provided
Scenario: Attempting to email a large file to a recipient.
Observed behavior: The email client blocks the outgoing message or prevents the file attachment because it exceeds the maximum 25 MB limit.

Before you start

Ensure you have an active cloud storage account, such as OneDrive for Business or SharePoint Online, and that your file is ready to be uploaded.

Solution 1Recommended

Use Cloud Storage to Share a Link

Upload the large file to a cloud service like OneDrive or SharePoint and share the link via email instead of attaching the file directly.

Standard email protocols restrict attachment sizes to ensure smooth server performance. Bypassing this limit requires hosting the file externally and sharing its location.

Open Cloud Storage

Log into your OneDrive for Business or SharePoint Online account through your web browser.

Upload the File

Navigate to your desired folder, click the 'Upload' button, and select the file that exceeds the 25 MB limit.

Generate a Link

Once the upload is complete, select the file and click on the 'Share' or 'Copy link' button in the top menu to generate a shareable URL.

Paste into Email

Open Outlook or your preferred email client, compose a new message, and paste the generated sharing link into the body of the email before sending.

Manage Permissions: Make sure to adjust the link settings so the recipient has the appropriate permissions (e.g., 'Anyone with the link can view' or 'Specific people') to access the file without errors.

Seamless File Sharing

Easily Share Large Documents with WPS Office Cloud

Avoid email attachment size limits entirely by using WPS Office. With built-in WPS Cloud, you can upload large documents and generate secure sharing links directly from the editor without relying on external cloud services.

1. Open Your Document: Launch WPS Office and open the large document or presentation you wish to share.
2. Access the Share Menu: Click the 'Share' button located at the top right corner of the application window.
3. Create a Cloud Link: Select 'Create Link' to automatically upload your document to your WPS Cloud space.
4. Send to Recipient: Copy the generated sharing link and paste it directly into your email draft. The recipient can click the link to view or download the file.

Seamlessly share files larger than 25 MB via WPS Cloud linksFully compatible with Microsoft Office formats (Word, Excel, PowerPoint)Set expiration dates and password protection for shared linksFree, lightweight, and easy to use for everyday document management

microsoft office alternative - wps office

Frequently Asked Questions

Why is there a 25 MB attachment limit on emails?

Most email providers, including Outlook and Gmail, enforce a 20 MB to 25 MB limit on incoming and outgoing attachments to prevent server overload, avoid delayed delivery times, and ensure smooth email processing.

Can I compress a file to make it smaller than 25 MB?

Yes, you can zip the file or use built-in compression tools to reduce its size. However, if the file remains over 25 MB after compression, you must use a cloud storage sharing link to send it.

Are sharing links safe to send via email?

Yes, sharing links generated by trusted services like OneDrive, SharePoint, or WPS Cloud are secure. You can enhance security by adding password protection, restricting access to specific email addresses, or setting the link to expire after a certain period.

Outlook & Email Problems