How to Send Large Files through Outlook Email?

Last Updated on December 30, 2023 by Amit Bansal

Recently, I dedicated nine days to preparing a tender for my organization during the lockdown. After finalizing it, the task was to upload all files to the tender portal, which falls outside my responsibilities.

Thus, I planned to email the documents to my colleague.

However, I encountered an issue: the files are too large to send via email.

What happens next is a long story we will discuss later.

However, there are ways to send large files through Outlook without hitting those limits.

In this article, we’ll show you how to send large files through Outlook using various methods.

How to send files larger than 25MB through Outlook?

I will discuss four effective methods for sending large files in Outlook, covering a range of options to suit different needs.

  • Resize Image
  • Compress Attachment Size
  • Use add-ins to send large files directly from Outlook

There are several email service providers around the globe, with a maximum limit of 20 MBs to 25 MBs per message, Microsoft outlook freezes the limit of 20 MBs for the user, in that scenario.

Resize large image when I send this message

In case you attached images in any form in a new mail message, there is an option to reduce the size, you can easily resize them in Outlook using the Resize Image feature.

  • Once you attach the image file in Outlook.
  • Click the File tab from the top left corner of the screen.
  • Select Resize large images when I send this message.
resize large image when I send this message

This feature only works when you attach the image in Outlook embedding the image won’t be resized.

Compress Attachments Size

Another effective way to send large files through Outlook is by compressing them into a zip file.

This method can help reduce the size of your files, making them easier to send via email.

To compress a file, simply right-click on it in File Explorer and select “Send to” >> “Compressed (zipped) folder”. This will create a new zip file containing your original file.

Once you’ve compressed your file, you can attach it to your email message and send it as you normally would.

Keep in mind that some email servers may still have attachment size limits, so this method may not work for extremely large files.

add to archive

Using Outlook Add-ins

If you frequently need to send large files through Outlook, you may want to consider using an Outlook add-in like Filemail or WinZip.

These add-ins can help you compress and send large files directly from within Outlook, making the process much faster and more convenient.

To use an Outlook add-in, simply download and install the add-in from the Microsoft Store.

Then, open Outlook and click on the add-in to access its features. From there, you can compress and send large files without ever leaving Outlook.

Overall, these workarounds can help you send large files through Outlook more easily and effectively.

Whether you prefer to use cloud storage services, compress files, or use Outlook add-ins, there are plenty of options available to help you get the job done.

Using Cloud Storage Services

When sending large files through Outlook, certain limitations can make it difficult to share files with recipients.

For instance, Outlook won’t allow you to send a message that’s larger than 20 MB through web-based email servers like Outlook.com or Gmail, or larger than 10 MB when sending through an Exchange server.

Fortunately, there are several alternatives to sending large files through Outlook that can help you share files with ease.

Using OneDrive or Google Drive

One of the easiest ways to send large files is by using cloud storage services like OneDrive or Google Drive.

Both services offer free and paid plans that allow you to upload files to the cloud and share them with others via a link. To use OneDrive or Google Drive, follow these steps:

  1. Log in to your OneDrive account using your Outlook credentials.
  2. Upload the file to your OneDrive or Google Drive account.
One drive folder
  • Select the file uploaded which was visible on the screen and click the share icon or Right-click on the file that you would like to share and click Share.
share file on drive
  • At this point, you have two options- you can either enter the email addresses of all the people that you want to share the file with, or you can generate a link that you can embed in the email message body.
copy link
  • It is recommended to copy the link, which you can embed in the email message, then you should click on the Copy Link icon.
copy link one drive
  • Go back to your Outlook New mail window, and simply hit Ctrl + V (shortcut key) to paste the copied link.
Outlook copied link
  • Send the link to the recipient via email.

Sharing Files Online

Another way to send large files is by using online file-sharing services like iCloud, Dropbox, or ShareFile.

These services allow you to upload files to their servers and share them with others via a link or email. To use these services, follow these steps:

  1. Upload the file to the service of your choice.
  2. Create a shareable link or invite the recipient to access the file.
  3. Send the link or invitation to the recipient via email.

Sending Large Video Files

When it comes to sending large video files, there are a few things to keep in mind. First, video files can be quite large and may exceed the file size limits of most email services.

Second, large video files can take a long time to upload and download, especially if the recipient has a slow internet connection.

To send large video files, follow these steps:

  1. Compress the video file to reduce its size.
  2. Upload the compressed file to a cloud storage service like OneDrive or Google Drive.
  3. Share the file by creating a shareable link or inviting the recipient to access the file.
  4. Send the link or invitation to the recipient via email.

In conclusion, there are several alternatives to sending large files through Outlook that can help you share files with ease.

Whether you use cloud storage services, online file-sharing services, or compress large video files, there are many ways to get your files to their destination quickly and securely.

What is the attachment size limit for Outlook?

Outlook’s email client sets a maximum limit of 20 MBs for every email attachment including email content.

If you try to attach beyond the limit, outlook through you out and flashes the message “The file you are attaching is bigger than the server allows. Try putting the file in a shared location and sending a link instead”.

What is the file size limit for outlook attachments

How to Increase Attachment Size Limit?

regedit
  • Press Window+R
  • Type “Regedit” in the Run dialog box >> Hit Ok
  • Technically you entered the nerve of your system, and you are about to hack some minor settings.
  • Copy and Paste – [Computer\HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Preferences] in the address bar of the registry editor.

I am using Outlook 2019

registry editor outlook
  • Find MaximumAttachmentSize value File >> double click it.

Sometimes MaximumAttachmentSize is not present in the folder Follow these steps and add the folder:

  1. Go to Edit of the registry editor.
  2. Click New >> DWORD Value >> File added [name the file MaximumAttachmentSize], and Hit Enter.
  3. Double click MaximumAttachmentSize value File.

The Value data allows you to attach the file size, if you leave it blank or zero you effectively disable the email attachment limit in your Outlook.

The default outlook attachment size limit in the absence of MaximumAttachmentSize is 20 MB or 20480 KB.

After MaximumAttachmentSize you have to enter your desired attachment size limit in KB.

For instance: If you like to set the size limit to 25 MB, you have to enter the value 25600 and select the decimal in the dialog box.

Finally, Hit OK and Close Registry Editor.

Technically you have revised the attachment limit with 5 MB more, no you can attach the file size by 25 MB.

Important Information

  • What is the maximum size of an email attachment in Hotmail – 10MB
  • What is the maximum size of an email attachment in Gmail – 25 MB
  • What is the maximum size of an email attachment in Mail.com – 50 MB
  • What is the maximum size of an email attachment in Yahoo – 25 MB

Some of the email service providers bring cloud service to their users which allows you to attach file sizes more than their limit and automatically upload your file to the cloud.

If you are using Outlook.com – It allows you to easily upload files to the cloud and send the link to the file through email, that’s the beauty of Outlook.

If your recipient or your mail server doesn’t support the size of the email you are trying to send, your email won’t be sent.

Troubleshooting Errors and Limitations

When sending large files through Outlook, you may encounter errors or limitations that prevent you from sending the file successfully.

In this section, we will cover some common error messages and cumulative size limits that you may encounter while sending large files through Outlook.

File Too Large

The most common error message you may encounter when trying to send large files through Outlook is “file too large.”

This error occurs when the file you are trying to send exceeds the maximum size limit set by your email provider.

The maximum size limit varies depending on your email provider, but it is typically around 25 MB.

Message Blocked

Another error message you may encounter when trying to send large files through Outlook is “message blocked.”

This error occurs when your email provider blocks the message due to its size or content. Some email providers may also block messages that contain certain file types, such as .exe or .zip files.

Connection Error

If you are experiencing connection issues while trying to send large files through Outlook, you may encounter a connection error.

This error occurs when there is a problem with your internet connection or the email server.

Cumulative Size Limits

In addition to file size limits, many email providers also have cumulative size limits that restrict the total size of all attachments in a single email.

For example, if your email provider has a cumulative size limit of 50 MB and you attach two files that are 30 MB each, you will not be able to send the email.

To avoid hitting cumulative size limits, you can try compressing your files into a .zip file or using a file-sharing service like OneDrive or Dropbox to share the files.

These services allow you to upload large files and share a link to the file instead of attaching it to an email.

Final Thoughts

Hacking regedit does not increase the limit set by your service provider, In the case of the service provider setting the attachment size of 10MB and you tried to send the mail, which is beyond the size, you’ll still get sending errors about the message being too big. 

Other bonus tips are easy to use, and the results are satisfactory. Breaking up a file and sending multiple emails is another vintage option rarely used currently. 

Frequently Asked Questions (FAQs)

When it comes to sending large files through Outlook, there are often some common questions that come up.

In this section, we’ll address some of the most frequently asked questions to help you better understand the process.

What is the maximum file size that can be sent through Outlook?

The maximum file size that can be sent through Outlook varies depending on the version you are using.

In general, Outlook 2016 and later versions allow you to send files up to 150 MB in size.

However, some email providers may have lower limits, so it’s always a good idea to check with your recipient to make sure the file size is acceptable.

How can I reduce the size of large files before sending them through Outlook?

There are several ways to reduce the size of large files before sending them through Outlook.

One option is to compress the files using a file compression tool like WinZip or 7-Zip.

Another option is to resize images or videos to a smaller resolution to reduce the file size. You can also split large files into smaller parts using a file splitter tool.

Can I send multiple large files at once through Outlook?

Yes, you can send multiple large files at once through Outlook. One way to do this is to zip the files into a single compressed folder and then attach the folder to your email.

Another option is to use a third-party add-in like Filemail to send multiple files at once inside a folder.

What should I do if my file is too large to send through Outlook?

If your file is too large to send through Outlook, there are a few options you can consider.

One option is to use a cloud storage service like OneDrive, Dropbox, or Google Drive to upload and share the file with your recipient.

Another option is to use a file transfer service like WeTransfer or SendSpace to send the file directly to your recipient.

Finally, you can also consider splitting the file into smaller parts using a file splitter tool and sending each part separately.

Also Read:

Amit Bansal

Hello, my name is Amit Kumar Bansal, and I am the founder of MailSmartly.com. Through this blog, I focus on Microsoft Outlook, offering insightful and informative content. Additionally, I produce educational videos on YouTube to further enhance the understanding of my audience. visit my YouTube Channel

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