Natrium Mail Agent bronze
natrium.sh
“AI agent for Natrium encrypted communications, supporting autonomous email retrieval, automated message triage, cryptographic signature verification, and secure email sending.
a2a https://natrium.sh/api/a2a talk to it https://natrium.sh/.well-known/agent-card.json its cardwe checked this the operator says this
Verified by agenttru.st
Everything here is a check agenttru.st performed itself. Assurance, protocol, hosting and freshness are in the card above and are not repeated.
- Certificate
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Issued by Google Trust Services
domain-validated
Valid until 5 Feb 2027 as of our check on 9 Nov 2026. A wildcard certificate: its other hosts are invisible here, because CT logs the wildcard, not them.Control of the hostname was checked; nothing about who operates it.Key ECDSA P-256, signed ECDSA-SHA256, issued via WE1 under GTS Root R4 — classical, as every publicly trusted certificate is today.
Names on this certificate (2)
natrium.sh,*.natrium.sh. - Connection
- TLS 1.3 · X25519MLKEM768 — post-quantum hybrid key exchange, agreed with our checker on 9 Nov 2026. What this means
- DANE / TLSA
- Not verified
- Discovery
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Well-known document
This host also publishes an ARD catalog (
/.well-known/ai-catalog.json) declaring 3 resources. The catalog's entries are the publisher's claims, not something agenttru.st verified. - AI use policy
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What this site's
robots.txtsays about how AI may use its content. Recorded as the operator wrote it, not enforced — these are preferences about use, not access, and agenttru.st only reads the agent's own discovery documents. - AI-facing documents
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Publishes
/llms.txt— “Natrium Mail (Natrium Technologies Inc.)” a curated map of the site's content for language modelsPublishes a Web Bot Auth key directory (1 key,EdDSA) — the operator publishes keys so their agent's signed requests can be verified. agenttru.st recorded that the directory exists; it has not verified a signature.Fetched from this host during verification. Neither document is how this agent was discovered. - First seen
- 26 Oct 2026
View verification details
- Assurance
- bronze Bronze — agent card fetched over HTTPS with a valid certificate
- Protocols
- A2A verified by handshake or card fetch, not merely advertised
- Hosted in
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? Unknown
·
Cloudflare, Inc.
(AS13335)
The address did not geolocate — usually anycast hosting, where one address answers from many places at once.
- Last checked
- 6d ago
What this agent says it can do
Declared in the agent's own card. agenttru.st has not tested whether it completes any of these tasks — the operator of natrium.sh controls every word below.
Send Encrypted Email
Send an end-to-end encrypted or standard email via Natrium Mail API
Query Mailbox
Retrieve messages, threads, and folders from user inbox
Manage Keys
Retrieve and verify public encryption keys and signatures
What its catalog declares
From the ARD catalog this host publishes at
/.well-known/ai-catalog.json. The operator controls every entry; agenttru.st
verified that the catalog exists and parses, and nothing about what the entries say.
Natrium Mail MCP Server
https://natrium.sh/.well-known/mcp/server-card.jsonNatrium Mail A2A Agent
https://natrium.sh/.well-known/agent-card.jsonNatrium Agent Skill — Send Encrypted Email
https://natrium.sh/.well-known/agent-skills/send-email/SKILL.mdTechnical agent card
Copied from the agent's card. The operator controls these values; agenttru.st has not verified them.
- Provider
- Natrium Technologies Inc. — what this agent says about itself; other agents claiming the same provider are not thereby related
- Protocol
- a2a
- Version
- 1.0.0
- Card completeness
- complete all eight fields required by a2a.proto v1.0
View all card details
- Capabilities
- extendedAgentCard pushNotifications streaming
- Agent card
- https://natrium.sh/.well-known/agent-card.json
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