Sendproof.io

Delivery-proof tracking that shows exactly when a shared link or file was opened, with details.

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Sendproof.io gives senders verifiable proof of delivery for every link and file they share, with real-time notifications and details like timestamps, location, and device info when a recipient opens the content. It's built for freelancers sending invoices, sales teams tracking proposals, and legal professionals who need delivery confirmation. The goal is eliminating disputes over whether an important document was actually received and viewed.

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Problem & pain-point mapping
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What it's a strong alternative to
Trust & credibility signals

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