How to prove someone received your email attachment or shared file

This task can be performed using Sendproof.io

"I never received it" — never again

Best product for this task

Sendproof.io

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Sendproof.io gives you proof of delivery for every link and file you share. Get real-time notifications when recipients open your content, with detailed tracking including timestamps, location, and device info. Perfect for freelancers sending invoices, sales teams tracking proposals, and legal professionals who need delivery confirmation. No more "I never received it" excuses — know exactly when your important documents are viewed.

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What to expect from an ideal product

1. Track when recipients actually open your shared files and links with exact timestamps showing proof they accessed your content
2. Get instant notifications the moment someone views your documents so you know delivery happened in real-time
3. Capture detailed information like location and device data that creates undeniable evidence of file receipt
4. Generate delivery confirmations that work better than read receipts since they track actual file opening, not just email opens
5. Build a timeline of access attempts that you can reference later if disputes arise about whether files were received

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