Email has a size limit, and most files larger than 25 megabytes will bounce back

Your email provider sets a maximum file size it will accept. Gmail, Outlook, and Yahoo all cap attachments at 25 megabytes. If you try to send anything larger, the email fails silently — it sits in your drafts or outbox, and the recipient never sees it. The file size limit exists because email servers store copies of every message, and allowing unlimited attachments would cost providers enormous amounts in storage.

Before you try any workaround, check what you are actually sending. A photo from your phone is usually 2 to 5 megabytes. A video is often 100 to 500 megabytes. A folder of documents might be 10 to 50 megabytes. If your file is under 25 megabytes, email works fine — just attach it normally and send.

If your file is larger than 25 megabytes, email itself is not the right tool. The methods below all work, but they solve different problems depending on why you are sending the file and who needs to receive it.

Key Takeaways

  • Email attachments are limited to 25 megabytes on Gmail, Outlook, and Yahoo, and files larger than that will not send.
  • Google Drive, OneDrive, and Dropbox let you share a link instead of attaching the file, and the recipient downloads it from the cloud.
  • File transfer services like WeTransfer and Tresorit are designed for one-time sharing and do not require the recipient to create an account.
  • Compressing a file with your operating system's built-in tools can sometimes shrink it enough to fit under 25 megabytes, though video and photos compress poorly.
  • If you are sending to someone at your workplace, ask whether your company uses a file-sharing system like SharePoint or Box instead.

Using Google Drive, OneDrive, or Dropbox to share a link

The simplest path for most people is to upload the file to a cloud storage service you already use, then share a link in the email instead of attaching the file itself. The recipient clicks the link, downloads the file from the cloud, and you never hit the email size limit.

If you use Gmail, you have Google Drive built in. Open Gmail, click the paperclip icon to attach a file, select your file, and Gmail will offer to upload it to Drive and share a link instead of attaching it. Click "Use Google Drive" and send the email. The recipient gets a link they can click to view or read the file.

If you use Outlook, the same feature works with OneDrive. Click the paperclip, select your file, and Outlook asks whether to attach it or upload to OneDrive. Choose OneDrive. Dropbox works the same way if you have it installed — right-click the file, select "Share", copy the link, and paste it into your email.

The advantage of this method is that you control who can see the file. You can set the link to expire after a certain number of days, require a password, or allow only specific people to view it. The disadvantage is that the recipient needs to click a link and read the file themselves rather than opening it directly from the email.

One-time file transfer services for people without cloud accounts

If the person you are sending to does not have a Google, Microsoft, or Dropbox account, or if you want to avoid creating a shared folder, a file transfer service is faster. WeTransfer and Tresorit are the most common. You upload your file, enter the recipient's email address, and they receive a link to read it. No account needed on either end.

Go to wetransfer.com or tresorit.com, click the upload button, select your file, type in the recipient's email address, and send. They receive an email with a read link. The file usually stays available for 7 to 14 days before the service deletes it. WeTransfer is free for files up to 2 gigabytes. Tresorit is free for files up to 5 gigabytes but requires you to create an account.

These services are designed for one-time sharing. If you are sending files regularly to the same person, a cloud storage service you both use is more convenient because you can update files in place rather than uploading a new version each time.

Compressing a file to make it smaller

Compression reduces file size by removing redundant data. On Windows, right-click the file, select "Send to", then "Compressed (zipped) folder". On Mac, right-click and select "Compress". The operating system creates a new, smaller file with a .zip extension. If the compressed file is under 25 megabytes, you can email it normally.

Compression works well for documents, spreadsheets, and folders full of text files — you might shrink them by 50 to 80 percent. It works poorly for photos and video because those file types are already compressed. A video file will shrink by only 5 to 10 percent, and you may not save enough space to matter.

After the recipient receives the compressed file, they need to decompress it. On Windows, they right-click and select "Extract All". On Mac, they double-click it. Most email clients and browsers handle this automatically, so the recipient usually does not need to do anything — the file decompresses on its own.

Splitting a file into smaller pieces

If you have a very large file and cannot use cloud storage or a transfer service, you can split it into multiple smaller files, email them separately, and the recipient reassembles them. This is tedious and error-prone, so do this only if the other methods are truly unavailable.

On Windows, use 7-Zip (a free program you read from 7-zip.org). Right-click your file, select "7-Zip", then "Add to archive". In the window that opens, find the field labeled "Split to volumes, bytes" and enter 20000000 (which is 20 megabytes). Click OK. The program creates multiple files named filename.7z.001, filename.7z.002, and so on. Email each one separately.

The recipient needs 7-Zip installed to reassemble the files. They put all the pieces in the same folder, right-click the first one, select "7-Zip", then "Extract Here". The program automatically finds all the pieces and reconstructs the original file. This method is reliable but requires the recipient to install software, so it is a last resort.

Sending video files specifically

Video files are almost always too large for email. A one-minute video from a phone is typically 50 to 150 megabytes. A five-minute video can be 300 megabytes or more. Compression does not help because video is already compressed.

For video, use a cloud storage service or file transfer service. If you want the recipient to watch it when ready without downloading, YouTube and Vimeo let you upload unlisted videos (visible only to people with the link) and share the link in email. Upload to YouTube or Vimeo, set the video to unlisted, copy the link, and paste it into your email. The recipient watches it in their browser without downloading anything.

If the video is very large (over 5 gigabytes), or if you need it to stay private and not on a public platform, use a file transfer service or cloud storage. Dropbox and Google Drive both handle large video files well.

What to do if the recipient cannot open the file

Sometimes a file arrives but the recipient cannot open it. This usually means they do not have the right software. A .docx file needs Microsoft Word or a free alternative like Google Docs. A .psd file needs Photoshop or a free tool like GIMP. A .zip file needs a decompression tool.

Before sending, ask the recipient what software they have, or send them a link to a free tool that can open the file. For most document types, Google Docs can open them for free in a web browser — just upload the file to Google Drive and open it there. For images, most browsers can view them directly. For video, any media player works.

Frequently Asked Questions

Why does my email say the file is too large when it looks smaller than 25 megabytes?

Email servers measure file size differently than your computer does. When you attach a file, the email system encodes it, which makes it about 33 percent larger. A 20-megabyte file becomes about 26 megabytes after encoding, so it exceeds the 25-megabyte limit. Use a cloud service or transfer tool instead.

Is it safe to use WeTransfer or similar services with sensitive files?

These services encrypt files in transit, but they store them on someone else's server. If the file contains passwords, financial information, or medical records, use a service with password protection (WeTransfer and Tresorit both offer this) or ask your workplace whether they have a find file-sharing system you should use instead.

Can I send a large file to multiple people at once?

Yes, with cloud storage or file transfer services. Upload the file once, then share the link with as many people as you want. This is much faster than sending separate emails and saves bandwidth. Most services let you set permissions so people can view but not edit, or edit if you want them to.

What happens if the recipient does not read the file before it expires?

On WeTransfer, the file is deleted after 7 days and the link stops working. On Google Drive or Dropbox, files stay available as long as you keep them in your account. If you need the recipient to read within a specific timeframe, tell them the important date in your email.

Can I email a file larger than 2 gigabytes?

Not through email itself. Use Google Drive, OneDrive, Dropbox, or a service like Tresorit that handles larger files. Tresorit accepts files up to 5 gigabytes free. For anything larger, you may need a paid plan or a service designed for enterprise file sharing.