Frequently Asked Questions
Everything you need to know about BackupBox cloud storage, transfers, security, and plans.
Q:How do I send a large file that's too big to email?
A:Most email providers cap attachments at 20MB–25MB. With BackupBox Link Sharing, you can upload massive files (up to 250MB for free, or 50GB on paid plans), generate a secure encrypted download link or direct email delivery, and share it with any recipient instantly without clogging inbox limits.
Q:How big a file can I send with BackupBox for free?
A:Free BackupBox users can transfer single files up to 250MB with 1GB of total high-speed Cloudflare R2 cloud storage included. If you need larger uploads, our paid tiers expand single-file limits up to 50GB and storage up to 10TB.
Q:Does BackupBox compress or reduce the quality of files?
A:No. BackupBox preserves your original files bit-for-bit. Photos, 4K videos, zip archives, and raw audio files are stored and delivered in full uncompressed resolution with exact hash checksum integrity.
Q:Does the person receiving my files need to create an account?
A:Not at all! Recipients can click your shared link and download transferred files directly from any desktop browser, phone, or tablet with zero sign-ups or account creation needed.
Q:How long does my transfer stay available before it expires?
A:You are in full control of link expiration. On free transfers, links can be active up to 7 days. Paid plans allow custom link expiry ranging from 1 day up to permanent non-expiring link duration.
Q:How secure is BackupBox and how are my files protected?
A:Security is built into BackupBox from the ground up. All transfers and stored files are encrypted with enterprise-grade AES-256 Bit Encryption both in transit (TLS 1.3) and at rest on global Cloudflare R2 edge infrastructure. Zero third-party data selling or indexing occurs.
Q:Can I protect my shared links with a custom password?
A:Yes! BackupBox allows you to set custom passcode locks on any shared link. Anyone opening your link must enter the password before previewing or downloading your files.
Q:How fast are file uploads and downloads on BackupBox?
A:BackupBox utilizes Cloudflare's high-speed global CDN edge network spread across 300+ cities worldwide. Uploads and downloads automatically route through the server nearest to you for maximum broadband speeds.
Q:What file formats can I upload and share?
A:BackupBox supports all file types — including raw camera files (RAW, DNG), 4K video (MP4, MOV, MKV), archives (ZIP, RAR, 7Z), documents (PDF, DOCX), audio (WAV, FLAC, MP3), and design software projects (PSD, AI, FIG).
Q:Can recipients stream video or preview documents without downloading?
A:Yes! BackupBox includes built-in rich media previewers so recipients can stream 4K video, listen to high-quality audio, inspect PDFs, and view image galleries directly inside their browser before choosing to download.
Q:What is the difference between Link Sharing and My Drive storage?
A:Link Sharing is designed for quick external file transfers with optional expiry, while My Drive provides permanent cloud file organization, folder hierarchy, tagging, and continuous multi-device sync.
Q:How does BackupBox Family Sharing work?
A:Our Family Plan enables 1 Host Owner to invite up to 5 family members (6 total users). Storage quota is pooled across the family while keeping every member's personal files, folders, and private transfers 100% isolated and private.
Q:Can I upgrade, downgrade, or cancel my plan anytime?
A:Yes! You can upgrade or downgrade storage tiers anytime from your dashboard billing settings. If you cancel, your existing files remain accessible for download, and you won't be charged for future billing cycles.
Ready to transfer large files securely?
Start sharing files up to 250MB instantly with 1GB of zero-knowledge encrypted cloud storage. No credit card required.