Send16

com.send16/send16 · mcp.send16.com · MCP, Website

Email, SMS and marketing automation: campaigns, contacts, automations and stats from Claude.

Name and description as published by MCP Registry

Live

Last successful check: 2 Nov 2026, 11:23 UTC.

answered, last 24 hours: 100%
answered, last 30 days: 100%

At send16.com, its best endpoint.

How addrbook checks →

Evidence

3 of 4 shown

Answers when askedShown
Answered a check 13 hours ago.
Owner provenShown
Control proven: send16.com, proven to the MCP Registry.
Track recordNot shown
Listed for 5 days; 30 are needed.
Independent paying walletsDoes not apply
It does not sell over x402.
Tool scanShown
No hidden instructions or invisible characters in its 87 tools.

Decided 3 Nov 2026, 00:43 UTC by method 2026.10.2, from its recorded evidence. A check that does not apply is left out of the count.

Connect

https://mcp.send16.com/https://send16.com/mcp

MCP: addrbook sends an initialize and a tools/list. It never calls a tool. Website: addrbook loads the page.

Who's behind it

Listed by: MCP Registrycom.send16/send16last seen 28 Oct, 03:41 UTC
Wallets named: None in its listings
Proven to belong to it: send16.comthe MCP Registry checked its publisher's namespace, 28 Oct 2026
Listed since: 28 Oct 2026, 03:41 UTC

Payments

It has no x402 endpoint, so there is no price for addrbook to read, and no source reports payments to it. How payments are read

Checks by endpoint

Host	Protocol	State	Last checked (UTC)	Last answered (UTC)	24 hours	30 days	Tools
mcp.send16.com	MCP	Live, sign-in required	2 Nov, 11:23	2 Nov, 11:23	100%	100%	87
send16.com	Website	Live	2 Nov, 11:23	2 Nov, 11:23	100%	100%	—

Tool scan

addrbook read the descriptions of 87 tools at mcp.send16.com on 28 Oct 2026, 15:39 UTC: 0 serious, 1 worth a look. It reads what the tools say about themselves; it never calls one. The recorded scan

Tool	Finding	Weight
update_brand	its description says “system prompt”	Worth a look
delete_action		What it can do
delete_audience		What it can do
delete_campaign		What it can do
delete_contact		What it can do
delete_topic		What it can do
delete_webhook		What it can do
remove_contact_from_audience		What it can do
remove_suppression		What it can do

History

29 Oct 2026, 15:36 UTCChanged from answering to answering with an auth challenge.https://mcp.send16.com/#1033547
28 Oct 2026, 15:39 UTCTool scan: no hidden instructions; 1 wording to look at.https://mcp.send16.com/#779713
28 Oct 2026, 15:39 UTCTool list first read: 87 tools.https://mcp.send16.com/#779712
28 Oct 2026, 15:39 UTCFirst recorded as answering.https://mcp.send16.com/#779711
28 Oct 2026, 15:39 UTCFirst recorded as answering.https://send16.com/mcp#779681
28 Oct 2026, 03:41 UTCListed by the MCP Registry.the MCP Registry#737876

Its whole history →

Is it yours?

Prove you control one of its domains or wallets and it passes the owner check. You can then reply beside the evidence and get alerts when it changes. Claim this agent

Its evidence badge, for a README or a site. It shows the same count as this page, never a verdict.

[![addrbook evidence](https://api.addrbook.com/v1/agents/send16-237b10f6/badge.svg)](https://addrbook.com/agents/send16-237b10f6)