If you’ve tried to email a large video, a design export, or a big PDF, you’ve probably hit the classic wall: “Message size exceeds maximum allowed size.” Most email providers cap attachments around 20–25MB, and even when a message squeezes through, it’s slow, unreliable, and clogs inboxes.

There’s a cleaner, faster way that still feels professional: send a secure download link.

Why email attachments fail for big files

Most providers cap attachments around 20–25MB
Extra overhead (encoding, signatures, inline previews) pushes you over limits
Emails get throttled, rejected, or silently dropped by filters
Every forward duplicates your file in multiple inboxes and backups

Instead of fighting your email server, hand off a single link to the file—protected and time‑limited.

The reliable fix: a secure download link

A password‑protected, expiring link solves size limits and deliverability headaches:

No attachment size limit for recipients
One definitive copy—no duplicates across forwarding chains
You can set an expiry (24 hours, a week, etc.) and limit total downloads
Optional passcode shared separately for extra protection

Comfyfile is built for this exact workflow—no account required for recipients.

Step‑by‑step: send a big file via email (without the bounce)

Export or zip your file
- Zipping keeps related items together and trims size a bit.
Upload to Comfyfile (supports large uploads; no recipient accounts needed)
Add a passcode
- Share it in a separate channel (SMS/DM/call) for better security.
Set an expiry
- 24 hours to 7 days covers most hand‑offs and limits long‑term exposure.
Limit downloads (e.g., 1–3 total)
Copy the share link
Paste the link in your email with a short note
- “Here’s the final video export. Link expires Friday. Passcode sent via text.”

That’s it. Your email stays lightweight and deliverable; the heavy lifting happens over a secure, direct download.

Pro tips to reduce size (when helpful)

Zip before uploading (especially folders, image sequences, or design exports)
Use “Export for web/share” presets where quality is already optimized
Trim unused footage/pages before export
Avoid sending raw project files unless specifically requested—send an export

Security and professionalism checklist

Add a strong passcode (don’t reuse one you use elsewhere)
Set a short expiry and limit downloads to what’s needed
Send the passcode via a different channel than the link
Add a brief description so recipients know what they’re downloading

With Comfyfile, these options take seconds and spare you from risky, oversized attachments.

Troubleshooting deliverability

If your message still bounces, remove any leftover attachment thumbnails or inline images and resend with only the link
Ask recipients to check spam if you’re emailing them for the first time
For very sensitive deliveries, coordinate the time window and confirm receipt

FAQ

Do recipients need an account?

No. Anyone with the link (and the passcode, if set) can download.

What happens after expiry or when downloads are used up?

The link stops working and the files are removed.

Can I share multiple files?

Yes—zip them so recipients get one clean download and nothing goes missing.

Stop wrestling with 25MB limits. Share one secure link—protected by a passcode, set to expire, and limited to a few downloads—and your large files just work.

Give it a try with Comfyfile: upload your file, add a passcode, set an expiry, and paste the link into your email.

How to Send Files Larger Than 25MB via Email