How to Send Large Files via Email

You’ve written the email, attached the file, hit send — and there it is: “Attachment size exceeds the allowable limit.” Whether it’s a video, a design bundle, a database export, or a folder full of documents, email simply wasn’t built for large files.

The good news: you don’t need the attachment at all. You need a link. And if the file is anything remotely sensitive, you need a secure link — one that’s end-to-end encrypted and doesn’t sit on a server forever.

Here’s how to send large files via email, and how scrt.link makes it both easy and private.

Why Email Providers Limit Attachment Sizes

Every major email provider caps attachments — mainly to keep mail servers fast, storage manageable, and spam in check:

And the real limit is often even lower: email encodes attachments in a way that inflates their size by roughly a third. A 25 MB limit means your actual file needs to be around 18 MB.

There’s a second problem nobody warns you about: email attachments are forever. Once sent, your file is copied to your “Sent” folder, the recipient’s inbox, every mail server in between, and every backup of those. You can’t un-send it, you can’t expire it, and you have no idea who forwards it.

So the question isn’t just “how do I get around the size limit?” — it’s “how do I send a large file without losing control over it?”

Best Ways to Send Large Files via Email

1. Send a secure, self-destructing link with scrt.link

Instead of attaching the file, you upload it to scrt.link and email the generated link. The file is encrypted in your browser before upload — true end-to-end encryption, meaning not even we can read it. The decryption key travels inside the link itself and never reaches our servers.

• Share files up to 100 GB (10 MB free with an account, 1 GB on the standard premium plan)
• The recipient just clicks the link — no account, no app, no sign-up
• The file is deleted after it’s downloaded (one-time access by default)
• Optional password protection, expiration (10 minutes to 30 days), and read receipts

This is the best option when the file matters: contracts, exports, credentials, client deliverables, medical or financial documents.

2. Compress the file (limited use)

Zipping a folder of documents can shrink it enough to squeeze under the attachment limit. But compression barely helps with photos, videos, or PDFs — those formats are already compressed. And a ZIP file in an inbox has all the same problems as any attachment: it lingers forever, unencrypted, in multiple mailboxes.

Useful for a folder of text files. Not a real solution for anything large or sensitive.

3. Share a cloud storage link

Google Drive, OneDrive, and Dropbox let you email a link to a stored file. This works well for ongoing collaboration — the link always points to the latest version.

The trade-off is privacy: these services can read your files (no end-to-end encryption), the file stays in your cloud account until you remember to remove it, and shared links are easy to over-share — anyone who gets forwarded the link may get the file. For a document you need to send once, securely, it’s the wrong tool.

Step-by-Step: How to Send a Large File with scrt.link

1. Go to scrt.link and select File.
2. Drop in your file. It’s encrypted locally in your browser, then uploaded in chunks — even very large files upload reliably.
3. (Optional) Set a password, an expiration time, or enable a read receipt so you know when it’s been retrieved.
4. Copy the secure link and paste it into your email.
5. The recipient opens the link and downloads the file. After that, it’s gone — permanently deleted from our servers.

That’s it. No recipient account, no software to install, no file rotting in an inbox.

What Makes scrt.link Different for Large File Sharing

Plenty of tools can transfer a big file. Almost none of them protect it. Here’s the honest comparison:

The core difference: with scrt.link, the file stops existing once it’s delivered. There’s no copy left behind to leak, get breached, or be subpoenaed. Zero-knowledge by design.

Security Considerations When Emailing Large Files

A few rules of thumb, whichever method you choose:

• Separate the lock from the key. If you password-protect a file, send the password over a different channel (e.g., a text message) — never in the same email as the link.
• Set an expiration. A link that works forever is a liability. With scrt.link you can expire links after as little as 10 minutes, or up to 30 days.
• Prefer one-time access. If the file only needs to be downloaded once, make sure it can only be downloaded once.
• Don’t trust “private” cloud links. A link that anyone can open isn’t access control — it’s hoping nobody forwards it.

Frequently Asked Questions

How do I send a file that is too big for email?

Upload it to a file-sharing service and email the link instead of the attachment. For sensitive files, use an end-to-end encrypted service like scrt.link, which deletes the file after it’s downloaded.

Can I email a 1 GB file?

Not as an attachment — every major provider caps attachments at 20–25 MB. But you can email a link to a 1 GB file. scrt.link supports files up to 1 GB on the standard premium plan, encrypted end-to-end.

How can I send a 100 GB file?

scrt.link’s top plan supports files up to 100 GB. Files are encrypted in your browser and uploaded in chunks, so even huge transfers complete reliably. The recipient downloads via a single secure link — no account required.

How can I send large files via email for free?

With a free scrt.link account you can send files up to 10 MB as encrypted, self-destructing links — already more than what survives email’s encoding overhead, and far more private. For bigger files, premium plans raise the limit to 1 GB or 100 GB.

Is it safe to send confidential files by email?

Plain email attachments are not safe for confidential data: they’re stored unencrypted in multiple mailboxes and backups, indefinitely. Send a scrt.link link instead — the file is end-to-end encrypted, optionally password-protected, and destroyed after delivery.

Does the recipient need an account to download the file?

No. The recipient just opens the link in any browser. Decryption happens automatically on their device.

Next time email rejects your attachment, don’t fight the limit — drop it. Send a link that delivers the file once, then disappears.

Send a large file securely with scrt.link — or check out premium plans for transfers up to 100 GB.