How to Send Files Too Big for Email: 7 Ways That Work

You attach the file, hit send, and seconds later the bounce message lands in your inbox: attachment exceeds the maximum allowed size. It is one of the most common frustrations in modern work, and it happens because email was never built to move large files. The good news is that there are at least seven reliable ways to send files too big for email — and the best ones take less than a minute.

Below, we explain why providers cap attachments at roughly 20-25 MB, walk through seven proven workarounds and when to use each, and finish with a step-by-step walkthrough using EveryTransfer, which lets you send up to 1 GB free with no account required.

Why Email Caps Attachments at 20-25 MB

Most major email providers limit attachments to somewhere between 20 and 25 MB. Gmail and Yahoo Mail typically allow up to 25 MB per message, while Outlook generally sits closer to 20 MB, and corporate mail servers are often stricter still. These caps exist for three practical reasons:

• Server load. Email systems store a complete copy of every message and attachment for the sender and each recipient, so large attachments multiply storage and bandwidth costs quickly.
• Encoding overhead. Attachments are converted to a text-based format (MIME encoding) that inflates file size by roughly 33%. That is why a 20 MB file can fail against a 25 MB limit.
• Reliability. A message often passes through several mail servers on its way to the recipient, and the strictest server in the chain decides whether it gets through.

The practical takeaway: if your file is larger than about 18-20 MB, do not fight the attachment system. Move the file outside email and send a download link instead. Every method below does exactly that in a different way. Gmail user? See our dedicated guide to sending large files via Gmail.

7 Ways to Send Files Too Big for Email

1. Use a File Transfer Service (the Easiest Option)

A dedicated file transfer service is the fastest solution for most people. You upload the file in your browser, get a short download link, and paste that link into a normal email. With EveryTransfer, you can send up to 1 GB per transfer without creating an account, and your recipient never needs an account either — they just click and download. You can also add a password, set a custom expiry date, limit the number of downloads, and get notified the moment your file is picked up.

2. Share a Cloud Storage Link

Google Drive, Dropbox, and OneDrive all let you upload a file and share a link to it. This works well when the file already lives in your cloud storage or when you plan to keep collaborating on it. The downsides: links inherit your account's permission settings (the classic request access dead end), recipients are sometimes pushed to sign in, and large files eat into your storage quota until you remember to clean them up.

3. Compress the File First

Zipping a file can shrink documents, spreadsheets, and raw data significantly — sometimes by half or more. It is the right move when your file is only slightly over the limit. Be aware that photos and videos are already compressed, so zipping a JPG or MP4 typically saves only a few percent. Compression buys you headroom; it does not solve the underlying problem.

4. Split the Archive Into Parts

Tools like 7-Zip and WinRAR can split a large archive into fixed-size chunks — say, five 20 MB parts — that you send across multiple emails. The recipient downloads every part and reassembles them. It works, but it is fragile: one missed email or corrupted part breaks the whole archive, and non-technical recipients often get stuck. Treat this as a last resort.

5. Hand Over a USB Drive or External Disk

For truly massive data sets — hundreds of gigabytes of footage, full disk backups — physically handing over a drive can still beat any internet connection. The obvious limitation is geography: shipping a drive to a remote recipient adds days of delay and a real risk of loss or damage.

6. Set Up FTP or SFTP (for Advanced Users)

FTP and its secure successor SFTP move files directly between machines and remain common in IT, publishing, and broadcast workflows. They handle huge files well, but require a server, client software, and credentials on both ends — a lot to ask of a client who just wants your presentation. Reserve this for recurring technical workflows, not one-off sends.

7. Send via Chat Apps (Read the Fine Print)

Slack, WhatsApp, Teams, and Discord all accept file uploads, and for casual sharing they are genuinely convenient. But free tiers cap upload sizes well below what serious work usually needs, and most messaging apps compress photos and videos on upload — so the version your recipient receives is not the original. Fine for a meme; wrong for a client deliverable.

Which Method Should You Use?

Match the method to the job:

• One-off file over 25 MB: a file transfer service — no signup, no cleanup, the link expires on its own.
• Ongoing collaboration on the same files: a cloud storage link from Drive, Dropbox, or OneDrive.
• File just barely over the limit: compress it and email as usual.
• Confidential documents: a transfer service with password protection — see EveryTransfer's security features.
• Recurring, automated transfers: SFTP or a transfer API.
• Quick photos between friends: chat apps are perfectly fine.

How to Send a Large File with EveryTransfer (Step by Step)

Here is the full process — it usually takes under two minutes:

1. Go to everytransfer.com. No account is needed for transfers up to 1 GB.
2. Drag and drop your files or folders into the upload box. Uploads are chunked and resumable, so a flaky connection will not force you to start over.
3. Optionally set a password, a custom expiry date, or a download limit before you send.
4. Choose whether to email the transfer directly to your recipient or copy a shareable link.
5. Hit send. You can get notified — by email, Slack, Discord, or Telegram — the moment your file is downloaded.

Your recipient clicks the link, previews the files right in their browser, and downloads — no account, no app, no friction. Sending a big video specifically? We cover format and quality tips in our guide to sending large videos online.

"The best file transfer method is the one your recipient never has to think about."

Frequently Asked Questions

What is the maximum file size you can send by email?

Most email providers cap attachments at 20-25 MB. Gmail and Yahoo typically allow 25 MB, Outlook around 20 MB, and corporate mail servers are often stricter. Because attachments are MIME-encoded with about 33% overhead, the largest file you can reliably attach is usually closer to 18 MB.

How do I email a file larger than 25 MB for free?

Upload it to a free file transfer service and email the download link instead of the file itself. EveryTransfer lets you send up to 1 GB per transfer free, with no account required for you and none for your recipient. Cloud drives like Google Drive work too, provided you have the storage space and your sharing permissions are set correctly.

Is it safe to use a file transfer service?

Yes, when you choose a reputable service and use its protection features. Look for HTTPS transfer, password protection, and expiry controls so the link does not live forever. EveryTransfer supports passwords, custom expiry dates, and download limits on every transfer, plus file encryption at rest on paid plans.

Why does my 22 MB file fail against a 25 MB limit?

Because email encoding inflates attachments by roughly a third. A 22 MB file becomes about 29 MB once MIME-encoded, which exceeds a 25 MB cap. As a rule of thumb, keep attachments under 70-75% of your provider's stated limit — or skip the attachment entirely and send a link.

Email attachment limits are not going anywhere, but they no longer have to slow you down. Most of the time, a file transfer service is the answer: faster than cloud-drive permission wrangling, safer than split archives, and friendlier than FTP. Pick the method that fits the job, and keep a transfer service bookmarked for everything else.