Send Large Files via Email
Send Large Files via Email Without Attachment Limits
Bypass Gmail and Outlook's 25 MB attachment cap. Send a secure download link by email instead. Up to 200 GB per transfer, free up to 5 GB.
Why email attachment limits exist (and why they're a problem)
Email was designed in the 1970s to send text messages, not files. Modern email systems support attachments, but every provider imposes hard size caps because email servers store and replicate every message multiple times across the delivery chain. A 50 MB attachment might be stored a dozen times across sender outbox, sending server, receiving server, recipient inbox, archive systems and backup copies. Multiply that by every email user, and the storage cost becomes prohibitive.
Gmail caps attachments at 25 MB. Outlook caps at 20 MB on consumer accounts and varies between 20 and 150 MB on enterprise accounts depending on the administrator's settings. Apple Mail technically supports larger attachments via Mail Drop, which behind the scenes is just a file transfer link rather than a true attachment. ProtonMail caps at 25 MB. Most other providers sit in the 10 to 25 MB range.
The result: any modern file beyond a small PDF or a low-resolution photo bounces. A 30 MB design draft, a 50 MB video clip, a 200 MB project ZIP: none of it fits in email. And the failure mode is often silent. The email bounces back hours later or, worse, the recipient never receives it without you knowing.
The fix: send a link, not an attachment
TransferRocket solves the email size problem by separating the file from the email itself. You upload the file to TransferRocket, enter the recipient's email address, and TransferRocket sends them a secure download link. The email is small (just the link and some context), so it arrives reliably regardless of file size. The recipient clicks the link and downloads the file directly.
This approach works with any email provider on both sides. The sender can be on a corporate Outlook account; the recipient can be on Gmail, ProtonMail or anything else. The download link works in any browser, on any device, without requiring the recipient to install software or create an account.
Beyond the size benefit, this approach is also more secure than email attachments. Files are encrypted in transit and at rest, password protection is free on every transfer, and files automatically delete after the storage duration you choose. Email attachments, by contrast, sit in inboxes and backups indefinitely, often unencrypted, sometimes across multiple devices. For more on the security side, see our page on GDPR-compliant file transfer.
Why TransferRocket works well for email-based delivery
- No attachment size limit
- Send files up to 200 GB. The email contains a download link, not the file itself.
- Works with any email provider
- Recipients can be on Gmail, Outlook, Apple Mail, ProtonMail or any other service. The download link works everywhere.
- Password protection on every transfer
- Add an extra access layer on top of the email link, useful for confidential and NDA work.
- Files don't sit in inboxes forever
- Files automatically delete after the duration you choose, unlike email attachments that live in inboxes and backups indefinitely.
- Encrypted in transit and at rest
- AES-256 at rest, TLS in transit. Better security than most email systems offer for attachments.
- Pay-per-use, no subscription
- Free up to 5 GB. Pay only when you need to send something larger.
How it works in practice
You have a 400 MB project file your client needs by end of day. Email is the wrong tool, but a shared cloud folder feels like overkill for a one-off delivery.
You open TransferRocket, drag in the file, set a 7-day storage duration, enter the client's email address, optionally add a password and start the upload. TransferRocket sends the client an email with a secure download link.
The email lands in their inbox in seconds, the same way any normal email would. They click the link, enter the password if you set one, and download the file directly to their machine. You see the moment they download it. After 7 days, the file is permanently deleted from TransferRocket's servers.
No bounced attachments. No silent delivery failures. No file living in the client's inbox indefinitely.
Frequently asked questions
- Why can't I send large files directly via email?
- Most email providers limit attachments to 20 to 25 MB. Gmail caps at 25 MB. Outlook caps at 20 MB on consumer accounts, sometimes higher on enterprise. Anything beyond that bounces or fails silently. Email servers were never designed for file delivery, so the workaround is to send a download link instead of an attachment.
- How does TransferRocket work as an email alternative?
- Enter your recipient's email address when creating the transfer. TransferRocket sends them a secure download link directly. They click the link, optionally enter a password, and download the file. No account required for them, no attachment size limit for you.
- Will the email arrive reliably?
- Yes. The transfer notification email is sent from a properly authenticated sender domain and routes through commercial email infrastructure. Deliverability is comparable to any commercial email service.
- Can I send to multiple recipients at once?
- Yes. Add multiple email addresses when creating the transfer and TransferRocket emails everyone a download link. You can also share the link manually with as many people as you need.
- Is the file safer than emailing it as an attachment?
- Yes. Files transferred through TransferRocket are encrypted in transit and at rest with AES-256, with optional password protection. Email attachments often travel over multiple servers in plaintext and live indefinitely in inboxes and backups. A TransferRocket link expires after the duration you choose, with files permanently deleted.
- Do I need an account?
- No. Send transfers up to 5 GB without creating an account. Larger transfers are pay-per-use with no monthly subscription.
Send a large file by email today
No account required. Free up to 5 GB.
You may also be interested in: GDPR-Compliant File Transfer, Send Files Internationally.