SEALnet
Send files by link without registration. Free up to 1 GB for up to 7 days, with browser encryption, passwords and revocable access.
Send files by link without registration. Free up to 1 GB for up to 7 days, with browser encryption, passwords and revocable access.
This page is designed to help you find out whether SEALnet is good and if it is the right choice for you.
Send a PDF, photo set or project ZIP by link. Neither sender nor recipient needs a SEAL account. Open seal.net, tap "Tap to send", choose your files and share the download link. Free: up to 1 GB per transfer, for up to 7 days.
Control expiry, passwords, single-use access, opening limits, geographic restrictions and NDA-gated access. Keep the separate management link to add files, create links to selected files, view access activity, export a signed log or revoke future access. Recipients can download individual files or a ZIP. Revocation cannot remove copies already downloaded.
SEAL Box is a browser inbox for your transfers, incoming files and requests from agents. Create an inbox without email and save its recovery key. Connected agents can deliver files there; you can answer their file requests outside chat.
Telegram users can use @Sealnetbot and its Mini App. Direct bot-chat uploads pass through Telegram and the bot host before encryption; the Mini App and seal.net encrypt on the device.
Developers have CLI, SDK, HTTP API and MCP workflows. Current packages are sealnet-mcp for MCP and sealnet for JavaScript and Python; the official Claude Code plugin and skill are at github.com/seal-hq/claude-plugins. Agent requests return a local file path rather than pasting a secret into chat. Recipient-key transfers support addressed handoffs. Host permissions still matter: a path does not prevent a process from reading the file.
Free: up to 1 GB per seal for up to 7 days. One-time upgrades per seal: 5 GB/$9/3 months, 50 GB/$29/6 months or 500 GB/$99/12 months. The separate per-file limit is 10 GB, not the free allowance. See seal.net/pricing.
Slack and browser extensions are Coming soon. Setup and security details: seal.net/docs and seal.net/legal/security.
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Client-side encryption
AES-256-GCM encryption before files leave the sender's browser
No Account Required
Send and receive files without registration or email
Expiring links
Set transfer expiration from 5 minutes up to 7 days on the free tier
Single-use sharing
Limit access to one counted opening; this is not a guarantee of one completed download or deletion of saved copies
Access controls
Password/OTP, download limits, geo restrictions and NDA acceptance
Revocable access
Revoke individual share links or the entire transfer
Encrypted metadata
File names and MIME types are encrypted
Audit trail
Track access events with time and country
Large file streaming
Streaming encryption without loading the entire file into memory
Developer tools
CLI, JavaScript and Python packages, HTTP API and MCP server
AI agent file handoff
Handoff delivers the link outside the normal tool response; local host permissions still apply
Free transfer size
1 GB per seal, up to 30 files and up to 7 days; individual-file limits apply
SEAL is for individuals, teams and developers who need to send sensitive or confidential files without relying on traditional cloud storage. It is especially useful for professionals sharing documents, businesses that need controlled temporary access, developers integrating encrypted file transfer into applications, and AI workflows that need secure file handoff through MCP.
SEAL was built around a simple idea: sending a private file should not require creating an account, installing an app or trusting a server with the plaintext. The service was designed around client-side encryption and temporary, controlled access from the start. SEAL has since expanded beyond the browser with CLI, SDK, API and MCP tools, while keeping the same principle: encrypt before upload and give the sender control over access.
SEAL combines encrypted browser transfers without registration with expiry, access controls and revocation. CLI, SDK, API and MCP support automated workflows. MCP handoff delivers links outside the normal tool response; secret intake returns a file path, and targeted transfers require the recipient's key. Host permissions still matter. Free seals include 1 GB for up to seven days; paid upgrades expand one seal without a recurring subscription.
SEAL is designed for situations where privacy and control matter. Files are encrypted client-side before upload, no account is required, and senders control access with expiration, passwords, single-use links, download limits and revocation. Unlike a traditional cloud drive, SEAL is built for temporary secure delivery rather than long-term file storage. It also supports browser, CLI, SDK, API and MCP workflows for both people and automated systems.
SEAL's published protocol uses AES-256-GCM for encryption, SHA-256 for ciphertext digests, and X25519 with HKDF-SHA-256 for recipient-key transfers. Developer interfaces include a CLI, JavaScript and Python packages, an HTTP API and the sealnet-mcp server. Browser integrations encrypt on the user's device; server-side SDK integrations encrypt in the process running the SDK. The protocol specification and test vectors are published at seal.net/docs/spec.
We have collected here some useful links to help you find out if SEALnet is good.
Check the traffic stats of SEALnet on SimilarWeb. The key metrics to look for are: monthly visits, average visit duration, pages per visit, and traffic by country. Moreoever, check the traffic sources. For example "Direct" traffic is a good sign.
Check the "Domain Rating" of SEALnet on Ahrefs. The domain rating is a measure of the strength of a website's backlink profile on a scale from 0 to 100. It shows the strength of SEALnet's backlink profile compared to the other websites. In most cases a domain rating of 60+ is considered good and 70+ is considered very good.
Check the "Domain Authority" of SEALnet on MOZ. A website's domain authority (DA) is a search engine ranking score that predicts how well a website will rank on search engine result pages (SERPs). It is based on a 100-point logarithmic scale, with higher scores corresponding to a greater likelihood of ranking. This is another useful metric to check if a website is good.
The latest comments about SEALnet on Reddit. This can help you find out how popualr the product is and what people think about it.
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Is SEALnet good? This is an informative page that will help you find out. Moreover, you can review and discuss SEALnet here. The primary details have been verified within the last quarter. So they could be considered up to date. If you think we are missing something, please use the means on this page to comment or suggest changes. All reviews and comments are highly encouranged and appreciated as they help everyone in the community to make an informed choice. Please always be kind and objective when evaluating a product and sharing your opinion.
