What is the max file size for outlook

Last Updated: Feb 20, 2024 by

Outlook is a popular email client used by millions of people around the world. It offers a variety of features and tools to help users manage their emails, calendars, and contacts. One of the most common questions asked by Outlook users is, “What is the max file size for Outlook?” In this article, we will explore the answer to this question and provide some tips on how to manage large attachments in Outlook.

Outlook Attachment Limit

Before we dive into the max file size for Outlook, it’s important to understand the attachment limit for this email client. The attachment limit refers to the maximum size of a file that can be attached to an email and sent through Outlook. This limit is set by the email provider and can vary depending on the type of account you have. For example, a free Outlook account may have a lower attachment limit compared to a business account.

Max File Size for Outlook

The max file size for Outlook can vary depending on the version of Outlook you are using and the type of email account you have. Generally, the maximum file size for attachments in Outlook ranges from 20MB to 35MB. However, this limit can be increased by the email provider or the user. For example, if you have a business account, your IT department may have increased the attachment limit to accommodate larger files.

Managing Large Attachments in Outlook

If you need to send a file that exceeds the max file size for Outlook, there are a few options you can consider. One option is to use a file-sharing service such as Dropbox or Google Drive. These services allow you to upload large files and share them with others by sending a link through email. Another option is to compress the file using a file compression tool. This can significantly reduce the file size and make it easier to send through Outlook.

Tips for Managing Attachments in Outlook

To avoid any issues with attachment limits in Outlook, here are some tips to keep in mind:

  • Use file-sharing services for large attachments
  • Compress files before attaching them to an email
  • Delete unnecessary attachments from your emails
  • Use cloud storage services to store large files instead of attaching them to emails
  • Check with your email provider or IT department to see if the attachment limit can be increased


In conclusion, the max file size for Outlook can vary depending on the version of Outlook and the type of email account you have. It’s important to be aware of the attachment limit and to have alternative methods for sending large files. By following the tips mentioned in this article, you can effectively manage attachments in Outlook and avoid any issues with file size limits.

Have you encountered any issues with attachment limits in Outlook? Let us know in the comments.

Gulrukh Ch

About the Author: Gulrukh Ch

Gulrukh Chaudhary, an accomplished digital marketer and technology writer with a passion for exploring the frontiers of innovation. Armed with a Master's degree in Information Technology, Gulrukh seamlessly blends her technical prowess with her creative flair, resulting in captivating insights into the world of emerging technologies. Discover more about her on her LinkedIn profile.