Install

Manage your account on the go with the SBI Card Mobile App

Upload the encrypted .zip or .7z file to any service.

MEGA remains a heavyweight in the free space, offering generous storage (up to 20GB+) with user-controlled encryption. 2. Peer-to-Peer (P2P) Transfer Tools

Coming from the creators of ProtonMail, their free tier offers high-level security with end-to-end encryption. It’s an excellent "base" for sensitive documents.

This is a standout for speed. It allows you to share files up to 10GB for free. Files are encrypted end-to-end, and for smaller files, the link expires instantly after download or after a set time.

Even if the link is "private," an added password layer prevents unauthorized access if the link is intercepted.

A versatile tool that uses a 6-digit key to pair devices. It’s fast, free, and doesn't require an account for basic transfers. 4. Advanced: "Zipping" and Encrypting Manually

If the tool allows it, set the link to expire after one download or 24 hours.