S3nding

Product Introduction

1. Definition: S3nding is a native macOS application that transforms S3-compatible storage buckets into an instant file-sharing platform. It operates as a lightweight background utility, bypassing third-party cloud services by leveraging direct S3 API integrations.
2. Core Value Proposition: S3nding eliminates recurring SaaS fees and vendor lock-in by enabling users to share files directly from their existing S3 infrastructure. Its core appeal lies in combining instant shareable links, zero storage markup, and full data ownership for professionals prioritizing speed and control.

Main Features

1. S3 Bucket Integration:

   • How it works: Users configure AWS S3 or S3-compatible providers (e.g., Backblaze B2, Cloudflare R2) via IAM credentials. The app uses S3’s REST API for encrypted TLS 1.2+ uploads, ensuring end-to-end security without proxying data.
   • Technology: Native macOS Cocoa framework for background operation, with automatic retry logic for network interruptions.

2. Drag-and-Drop Instant Sharing:

   • How it works: Files dragged onto the S3nding menu bar icon upload directly to the user’s bucket via multipart uploads (optimized for large files). A shareable S3 pre-signed URL is auto-copied to the clipboard.
   • Technology: S3 SDK for URL generation with configurable expiry (1h/1d/7d/never) and access policies (public/private).

3. Zero-Cost Storage Model:

   • How it works: S3nding imposes no storage limits or bandwidth fees—costs align purely with the user’s S3 provider. Files reside exclusively in the user’s bucket, avoiding intermediary servers.
   • Technology: Direct S3 API calls bypass SaaS markups; link sharing relies on S3’s native access controls.

Problems Solved

1. Pain Point: Eliminates redundant subscriptions to tools like Dropbox or WeTransfer by repurposing existing S3 storage for sharing. Solves vendor lock-in, recurring fees, and unnecessary file migrations.
2. Target Audience:
   • Developers/DevOps: Share build artifacts, logs, or binaries via CLI-compatible workflows.
   • Designers/Creators: Distribute large media files (e.g., 4K video, PSDs) without compression.
   • Freelancers/Agencies: Deliver client assets instantly, avoiding access-request loops.
3. Use Cases:
   • Securely sharing sensitive documents via expiring links during legal reviews.
   • Distributing beta software builds to testers via auto-expiring URLs.
   • Replacing internal Slack/email attachments with high-speed S3 links.

Unique Advantages

1. Differentiation: Unlike Dropbox (subscription-based storage) or Filemail (size limits), S3nding decouples sharing from storage—users retain full S3 control. Competitors lack native S3 integration or enforce monthly fees.
2. Key Innovation: Direct-to-bucket sharing via pre-signed URLs. This bypasses SaaS intermediaries, reducing latency and cost while leveraging S3’s scalability. The app’s background operation and one-click workflow are optimized for macOS efficiency.

Frequently Asked Questions (FAQ)

1. Does S3nding work with non-AWS S3 providers?
   Yes, S3nding supports any S3-compatible storage like Backblaze B2, Cloudflare R2, or MinIO. Configure credentials once for seamless integration.

2. Are file sizes limited by S3nding?
   No. File size limits depend solely on your S3 bucket’s configuration (e.g., AWS S3 supports 5TB objects). S3nding imposes no artificial caps.

3. Is my data routed through S3nding’s servers?
   Never. Uploads use direct S3 API connections, and files reside exclusively in your bucket. S3nding only generates/share links without data intermediation.

4. Can I use custom domains for shared links?
   Yes, if your S3 provider supports custom domains (e.g., Cloudflare R2 CNAME setups). S3nding uses your bucket’s native URL structure.

5. Do I pay monthly fees for S3nding?
   No. S3nding is a one-time $4.99 purchase with lifetime updates. Storage costs are billed directly by your S3 provider.