# sending.dev — email and messaging — 2 of 5

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> Probe-verified (tier 2 of 3). Last checked 2026-09-26. 2 of 5 capability checks passed. 3 unknown.

- host: sending.dev
- url: https://sending.dev/
- category: email and messaging
- type: business
- country: IT
- locations: Padova
- language: it

## Probe-verified · tier 2 of 3

Probed live on 2026-09-26 against rubric v1.2. 2 of 5 checks passed. 3 unknown.

- UNKNOWN — Markdown negotiation (`Accept: text/markdown`)
- UNKNOWN — Markdown twin at a predictable URL (`/page.md`)
- PASS — llms.txt (`/llms.txt`)
- PASS — API catalog (`RFC 9727`)
- UNKNOWN — MCP endpoint answers tools/list (`initialize → tools/list, no credentials`) · MCP not reachable
  - PRESENT — MCP server card (`/.well-known/mcp/server-card.json`): present; could not ask whether its server answers; not scored
  - Platform-supplied: not applicable — no MCP endpoint answered; not scored
- PASS — Other agent files at well-known paths (`agent-skills/index.json · oauth-authorization-server · oauth-protected-resource · http-message-signatures-directory`): found: Agent Skills index; not scored

## Summary

Multichannel messaging stack for email, WhatsApp, and Telegram with AI agent-driven automation and marketing flows, based in Padova, Italy.

## Context

118 sites in this index share the category "email and messaging"; 25 are transactional.

## How we grade

- tier 1 — **Declared**: The site says agents are welcome in its robots.txt. A permission, not a capability.
- tier 2 — **Probe-verified** (this site): We fetched the site and tested each signal ourselves. Dated, repeatable, re-checked on a schedule.
- tier 3 — **Behaviourally verified**: An agent completed the action end to end — booked, bought, submitted — and it worked.

## About this record

Known Good probes sites live and publishes what was tested and when.
Method: https://knowngood.sh/about.md · Rubric: https://knowngood.sh/benchmark

How we found this site: probe discovery. This site didn't declare agent access — we found it by checking the open web. Everything above was tested the same way, against the same rubric, on the date shown. [How we choose what to check, and how to opt out](https://knowngood.sh/bot)

## Where this sits

- Italy: https://knowngood.sh/country/IT
- business: https://knowngood.sh/type/business
- email and messaging: https://knowngood.sh/category/email-messaging
- marketing software (also in): https://knowngood.sh/category/marketing-software
- AI agents (also in): https://knowngood.sh/category/ai-agents
- Browse: https://knowngood.sh/browse
- Rubric: https://knowngood.sh/benchmark