Is Sandra a better alternative to Mailbigfile?

Sandra offers a significantly more modern interface, AES-256 encryption at rest, permanent links, no ads, GDPR-compliant EU hosting, and a Vault for long-term storage. Features that Mailbigfile's ageing platform doesn't provide.

Does Sandra encrypt files unlike Mailbigfile?

Sandra goes further. Every transfer is encrypted at rest with AES-256 and in transit with TLS 1.3 on all plans, plus one-tap AES-256-GCM end-to-end encryption, on every plan including Free, that encrypts files in your browser with a key Sandra never sees. Mailbigfile does not publicly document encryption at rest or offer end-to-end encryption.

Does Sandra use my files to train AI?

No. Sandra never uses your files, transfers, or Vault documents to train AI models, and never scans or analyzes your content. With one-tap end-to-end encryption on, Sandra cannot read your files at all, a guarantee Mailbigfile does not offer.

Does Sandra show ads like Mailbigfile?

No. Sandra is 100% ad-free on all plans. Mailbigfile's free tier shows advertisements to both senders and recipients, which can look unprofessional when sharing with clients.

How much does Sandra cost compared to Mailbigfile?

Sandra offers a free plan (5 GB per transfer), Pro at €15/month (1 TB, encryption, 500 GB Vault), and Business per-seat starting at €29/seat/month (€29×5, then €15/seat for 6+; 2 TB, team features). Mailbigfile starts around £9/month for higher limits with fewer privacy features.

Can I send files to anyone without them having an account?

Yes. Sandra recipients never need an account. They receive a secure link by email and download directly in their browser. No registration, no app install, on any device.

Mailbigfile Alternative

The Modern Mailbigfile Alternative
With Real Encryption

Sandra is the best Mailbigfile alternative for people who want a modern, ad-free experience with one-tap end-to-end encryption, EU hosting, and files that are never used to train AI.

Sandra replaces Mailbigfile with a modern interface, one-tap end-to-end encryption, zero ads, and permanent links. Send up to 5 GB free. No account required for recipients.

Send Files for Free See Pricing

No credit card required · Files up to 5 GB free

Why Professionals Choose Sandra Over Mailbigfile

No Ads, Ever

Mailbigfile shows ads to your clients on the free plan. Sandra is 100% ad-free on every plan, sender and recipient side.

AES-256 Encryption

Sandra Pro encrypts at rest with AES-256. Mailbigfile doesn't document encryption at rest, so your files may sit unprotected.

Permanent Links

Sandra Pro lets you create links that never expire. Perfect for evergreen client assets and brand deliveries.

Modern, Fast UI

Sandra is built on a modern stack: responsive on all devices, drag-and-drop upload, instant progress feedback.

Vault Storage

Beyond transfers: store files permanently in Sandra Vault with folder organization, search, and gallery sharing.

GDPR Compliant

Sandra stores files in the EU with full GDPR compliance. Mailbigfile is UK-based with less clear GDPR alignment post-Brexit.

Sandra vs Mailbigfile · Feature Comparison

Full side-by-side comparison of features, security, and pricing.

Feature	Sandra	Mailbigfile
Free file size limit	5 GB	4 GB
End-to-end encryption (browser-side)	One-tap, every plan (incl. Free)	No
AES-256 encryption at rest	All plans	Not documented
Files used to train AI	Never	Not guaranteed
Secure file requests (client upload)	Yes	No
Ads shown to recipients	Never	Yes (free plan)
Permanent (non-expiring) links	Pro+ plans	No
Password-protected links	Pro+ plans	Yes (paid)
GDPR-compliant EU storage	Yes	UK-based
Secure Vault storage	500 GB to 5 TB	No
Modern web interface	Yes	Dated UI
Mobile-optimized	Yes (responsive)	Partial
Download analytics	All plans	Limited
Resumable uploads	Yes	No
Team collaboration	Business+ plans	No
Free plan price	€0 / month	£0 / month
Pro plan price	€15 / month	~£9 / month

Last updated May 2026 · features and pricing subject to change.

How to Send Large Files Without Mailbigfile

Upload Your Files

Drag and drop any file: documents, photos, videos, archives. Up to 5 GB free, 1 TB on Pro. No desktop app needed.

Set Security Options

Choose expiry (4 days to permanent), add a password, and enter your recipient's email. Everything stays private.

Recipient Downloads

A clean, ad-free download page. No account required. Files auto-delete after expiry. Nothing lingers.

Frequently Asked Questions

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No ads. Real encryption. Free up to 5 GB. Your clients will notice the difference.

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The Modern Mailbigfile Alternative With Real Encryption