SecureMint

Gmail 25 MB Limit Workaround That Isn't Google Drive

Gmail caps attachments at 25 MB. When you exceed it, Gmail pushes you to upload to Google Drive and attach a link — but that upload is scanned by Google and stored with keys Google controls. If you don't want Google reading your file, SecureMint is the drop-in replacement: upload to a zero-knowledge server, paste the resulting link into Gmail, done.

Upload to SecureMint
SecureMint uses zero-knowledge design. The server cannot read your data.
securemint.app/d/abc123#secret-key

Steps

1

Stop fighting the 25 MB limit

Don't split the file into parts or compress to near-zero quality. The correct fix is to share a link, not cram it into an attachment.

2

Upload to SecureMint /send (up to 1 GB free)

Go to securemint.app/send. Drag and drop your file. Encryption happens in your browser with AES-256-GCM before the upload starts.

3

Copy the link, paste it into Gmail

Instead of attaching, paste the URL into the email body. Gmail will auto-link it. No 25 MB problem because there's no attachment.

4

Tell the recipient the password separately (if you set one)

If you added an optional password, tell the recipient via chat or phone. The link alone is not enough.

Why It's Secure

  • Zero-knowledge: the server stores ciphertext only, unlike Google Drive where Google holds the key.
  • The decryption key lives in the URL fragment (#), so even our access logs never see it.
  • Set a download-count limit and an expiry date for additional control.
  • Works for files up to 1 GB on the free plan; 5 GB on Pro. Much larger than Gmail's Drive fallback for free users.

FAQ

Why not just use Google Drive — it's built into Gmail?
Convenience cost: Google Drive scans file contents for malware, CSAM, and TOS violations, and holds the keys. SecureMint uses zero-knowledge — the server mathematically cannot read your file.
My file is 500 MB. Free tier?
Yes. Free tier supports up to 1 GB per file. No signup, no credit card.
Will Gmail flag the SecureMint link as suspicious?
No. It's a plain HTTPS URL. Gmail's link scanner does not flag securemint.app. If you're worried, add a line explaining the link to your recipient.

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