How to Send Large Files Without Email Attachments

Email attachments have a size problem that most services haven’t solved in decades. Gmail allows up to 25 MB. Outlook caps at around 20 MB. Most corporate mail servers are even more restrictive. A single RAW photo, 60-second screen recording, or small project archive is enough to hit those limits.

This guide covers what actually works for sending large files — when you need it fast, when you need it secure, and when the recipient isn’t expecting to install anything or create yet another account.

Why Email Attachment Limits Exist

Email servers were not designed to transfer large files. An email attachment gets base64-encoded, which immediately inflates its size by about 33%. A 15 MB file, once encoded, becomes roughly 20 MB travelling through multiple servers. Every SMTP hop stores the whole message temporarily. Servers impose limits to prevent any single email from consuming too much queue space or causing delivery delays for other users.

The 25 MB Gmail cap isn’t arbitrary — it’s a practical boundary for a system that was never meant to be a file delivery mechanism. The fix isn’t to argue with the limit; it’s to use the right tool.

Email Attachment Size Limits by Provider

Provider	Max attachment size
Gmail	25 MB (per email)
Outlook / Hotmail	20 MB
Yahoo Mail	25 MB
iCloud Mail	20 MB
Corporate mail servers (average)	10–25 MB (varies widely)

Option 1: Encrypted File Link (Recommended)

The cleanest approach: upload the file to FileShot.io, get a link, paste the link into your email. The recipient clicks the link and downloads the file directly in their browser. No account required on either side, and the file is encrypted end-to-end so neither the mail server nor the file server can read the contents.

This works for any file type up to 10 GB on the free tier. The link expires automatically (default: 90 days), which means you’re not leaving sensitive documents sitting on a server indefinitely.

Best for: any situation where you want the simplicity of an attachment but need to go bigger.

Option 2: Cloud Storage Link

Google Drive, Dropbox, and OneDrive all let you share a file via link without the recipient needing an account. The workflow is: upload to the cloud service, generate a shareable link, paste it into your email. This works well if you already use one of these services for storage.

The downsides: the file isn’t encrypted end-to-end (Google, Dropbox, and Microsoft can read your files), and the link doesn’t expire automatically unless you configure it. Google Drive links have also been known to expire or require the recipient to be signed in, even when the link is set to “anyone with the link.”

Best for: non-sensitive files you’re already storing in a cloud service.

Option 3: WeTransfer

WeTransfer is the best-known purpose-built email-attachment alternative. The free tier allows up to 2 GB per transfer. You enter the recipient’s email and your own, upload the files, and WeTransfer emails the recipient a download link directly. No accounts needed for either party on the free tier.

The downsides: 2 GB limit on the free tier, no encryption, WeTransfer sends the email on your behalf (which can look odd), and the link expires after 7 days.

Best for: sending to non-technical recipients who expect a simple email with a download link.

Option 4: Compress the File First

If compression is an option and the file is close to the attachment limit, this is worth trying. A group of photos, documents, or similar files zipped together often compresses to 60–80% of the original size, which might push you under the limit.

It doesn’t work for files that are already compressed (MP4 video, ZIP archives, JPEG photos, PDF documents with images — these compress very little). And it doesn’t help if the file is much larger than the cap no matter what.

Best for: borderline-size files consisting of compressible formats (text, raw images, uncompressed audio).

What to Do With Very Large Files (Over 1 GB)

For files over 1 GB, none of the email workarounds work cleanly. Your options at this scale:

• FileShot (up to 10 GB free, unlimited on Creator): For any file, any size. Encrypted, link-based, no account for recipients.
• WeTransfer Plus ($15/month): Up to 200 GB per transfer. Not encrypted.
• SFTP or SCP: For transferring between servers or to technical recipients. Secure but requires access credentials on both ends.
• Physical media: For extremely large files (terabytes), shipping a hard drive is still sometimes the fastest option. Sneakernet remains underrated.

When the Attachment Stays Small But Keeps Getting Blocked

Corporate email filters sometimes block attachments by file type rather than size. ZIP files, executable formats (.exe, .dmg, .apk), and even some PDF files with certain features are blocked on arrival. In these cases, a file sharing link sidesteps the filter entirely — the email body contains only a URL, which passes through almost any filter that isn’t completely locked down.

The Quick Comparison

Method	Max size (free)	Encrypted	Account required	Link expires
FileShot	50 GB	Yes	No	Yes (90 days)
WeTransfer	2 GB	No	No	Yes (7 days)
Google Drive	15 GB total	No	Sender yes	No (unless set)
Dropbox	2 GB total	No	Sender yes	No (unless set)

The Simple Answer

When your file is too large to email: go to FileShot.io, drop the file, copy the link, paste it into your email in place of the attachment. Your recipient gets a link they can click to download. The file is encrypted in transit. You don’t need an account. Neither do they.

Email was designed for text. Files are better served by a URL.

Send your file with FileShot →  ·  Full file size limits guide