How to send files that are too large for email
When a file exceeds the email attachment limit, the practical solution is to upload it to a file transfer service and send a download link instead of the file itself. Most email providers stop at around 25 MB, while transfer services handle gigabytes.
Why the email rejected your file
Email was designed for messages, not for moving large amounts of data. Providers therefore cap attachment size, typically at about 25 MB, and mail servers along the way may enforce even lower limits.
Attachments are also encoded before sending, which inflates them by roughly a third, so a file that looks like it should fit often does not.
The quickest fix: send a link
- Open a file transfer service such as MyAirBridge.
- Upload the file or folder you need to send.
- Generate a download link, or enter the recipient email address directly.
- Send the link in your email instead of the attachment.
- The recipient opens the link and downloads the file without creating an account.
Free transfers on MyAirBridge cover up to 20 GB, which is far beyond anything email can carry.
Other options and when they work
Compress the file
Zipping helps if the file is only slightly over the limit. Already compressed formats such as MP4, JPEG, or PNG will barely shrink.
Share from cloud storage
Works if the recipient is inside your organisation. External recipients are frequently asked to sign in, which is a common cause of failed deliveries.
Split the file into parts
Technically possible but awkward: the recipient has to reassemble the parts, and a single missing part breaks the whole set.
Recommended settings for business use
- set an expiration that matches how quickly the recipient replies
- add a password when the material is confidential, available from the Pro plan
- send to a named email address rather than posting the link in a group chat
- keep frequently delivered material in storage instead of re-uploading it
FAQ
What is the maximum size of an email attachment?
Most providers allow roughly 25 MB, and encoding overhead makes the practical limit lower. Anything larger has to be sent as a link.
How do I email a file that is 1 GB or larger?
Upload it to a transfer service and email the download link. MyAirBridge handles up to 20 GB per transfer for free.
Will zipping the file be enough?
Only if it is marginally over the limit. Video, photo, and audio files are already compressed and will not shrink significantly.
Summary
Files too large for email should be sent as a download link rather than an attachment. Compression helps only marginally, cloud storage often trips over sign-in requirements, and splitting files creates work for the recipient. A transfer service delivers up to 20 GB for free with nothing to install.