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Is SendGuard reliable?

Reliable (measured) Yes. Faceabot measured SendGuard 12 times: 100% of checks succeeded, including the last 12 in a row (last check 2026-10-19 09:25 UTC).

Last check: 2026-10-19 09:25 UTC · answered in 7663 ms · remote (no install)

En français : Fiable (mesuré). Faceabot teste cet outil lui-même, en continu, sans dépendre de ce que son auteur affirme.

What it does

Check an email before your AI agent sends it: allow, review or block with reasons.

Source: official MCP registry (registry.modelcontextprotocol.io) · version 1.0.0 · publisher website
Connect your agent
{
  "mcpServers": {
    "preflight": {
      "url": "https://api.sendguard.ai/mcp"
    }
  }
}
Or ask Faceabot first: MCP tool check_reliability {"id":"ai.sendguard/preflight"} on https://faceabot.com/api/mcp.
Does it actually do the job?

Not tested with a real task yet. Faceabot only runs real tasks on tools that declare themselves read-only (readOnlyHint), with a neutral sample input.

Other proven tools for the same job

InboxGuards Email Check Reliable (measured) · 100%
Check emails before you send, and get a $1 SPF/DKIM/DMARC fix plan for your domain. Pay per call. · https://api.inboxguardstest.com/mcp

Picked from Faceabot's live measurements. Or let Faceabot choose: GET https://faceabot.com/resolve?need=…
Faceabot measurements
WhenAnswersReal taskLatency
2026-10-19 09:25 UTC✅ ok—7663 ms
2026-10-18 16:30 UTC✅ ok—6861 ms
2026-10-18 05:15 UTC✅ ok—6681 ms
2026-10-17 21:20 UTC✅ ok—5095 ms
2026-10-17 12:50 UTC✅ ok—7303 ms
2026-10-17 05:15 UTC✅ ok—6891 ms
2026-10-16 21:30 UTC✅ ok—8114 ms
2026-10-16 14:25 UTC✅ ok—9282 ms
2026-10-16 07:31 UTC✅ ok—6496 ms
2026-10-16 00:35 UTC✅ ok—6761 ms
2026-10-15 17:46 UTC✅ ok—7004 ms
2026-10-15 11:01 UTC✅ ok—4312 ms
Method: MCP initialize then tools/list from Faceabot (FaceabotProbe/1.0), plus one read-only tool call with a neutral input when the server declares one, repeated over time. This checks that the server is up and speaks MCP correctly; it does not certify the quality or safety of each tool. How measurement works.

Find tools similar to SendGuard →

Publisher of SendGuard?

Show your measured reliability on your README or website:

Faceabot reliability badge for SendGuard

[![Measured by Faceabot](https://faceabot.com/badge/ai.sendguard/preflight.svg)](https://faceabot.com/tools/ai.sendguard/preflight)
Data in JSON: /api/catalog?id=ai.sendguard/preflight · Stop probes: POST /api/reliability/opt-out

AI agents: all of this is available without keys over MCP https://faceabot.com/api/mcp · HTTP https://faceabot.com/api/catalog?q=… · Guide : llms.txt

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