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Sidemail
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Sidemail MCP server

sidemail.io

Yes. Sidemail publishes an official MCP server at https://api.sidemail.io/mcp. It's hosted. It offers 43 tools. We last checked it on 1 Nov 2026.

Official MCP server
Hosted
Sign-in: see vendor docs

Official: documented on Sidemail's own site, at sidemail.io. Checked 1 Nov 2026. Maintained by Stuart Brameld.

Key facts

As of 1 Nov 2026, Sidemail's official MCP server scores 65/100 (provisional) on MartechDB's Agent Readiness Index (v1.1). It answered 15 of our 15 checks in the last 90 days and has 43 tools named in its documentation.

How the Agent Readiness Index works · Wrong? Suggest a correction

Sidemail MCP server review

65/100

Sidemail's MCP server scores 65/100 on MartechDB's Agent Readiness Index: easy to connect an AI agent to, with a few gaps.

The good

  • Hosted by Sidemail: connect by URL, with nothing to install

  • Documented, with 43 tools known

  • Answered 100% of our checks in the last 90 days

The bad

  • Nothing we've found.

Not checked yet: how you sign in; what agent access costs. Anything not checked scores nothing.

Official MCP server

Sidemail MCP server

Address
https://api.sidemail.io/mcp
Runs
Hosted
Sign-in
Sign-in: see vendor docs
Vendor docs
Official MCP Registry
Not listed
How we know it's official
  • Documented on Sidemail's own site, at sidemail.io.
Checked 1 Nov 2026.
Documentation
sidemail.io/docs/mcp-server/
Tools
43 tools · from Sidemail's documentation
First seen
17 Oct 2026
Last checked
Reachable ·
26 Oct 2026: reachable
27 Oct 2026: reachable
28 Oct 2026: reachable
29 Oct 2026: reachable
30 Oct 2026: reachable
31 Oct 2026: reachable
1 Nov 2026: reachable
Uptime
100% · 15 of 15 checks reachable since 18 Oct 2026

Sidemail MCP server tools (43)

The server needs sign-in before it lists its tools, so these are as Sidemail's documentation names them (read 1 Nov 2026). They may be out of date.

  • list-domains

    List all sending domains

  • create-domain

    Add a new sending domain

  • check-domain

    Check domain verification and DNS status

  • setup-domain-mail-from

    Set up custom Mail-From DNS records

  • delete-domain

    Remove a sending domain

  • get-project

    Get the current project

  • create-linked-project

    Create a linked project (API key connections only)

  • update-project

    Update project settings and email design

  • delete-linked-project

    Delete the current linked project

  • list-messenger-drafts

    List Messenger drafts

Connect your AI to Sidemail

Add the official Sidemail MCP server to Claude, ChatGPT or your editor.

Connect Sidemail MCP to Claude

Claude.ai and Claude Desktop

  1. Open Customize, then Connectors.

  2. Click +, then Add custom connector.

  3. Name it Sidemail, paste the address below and click Add.

Claude Code

Sidemail MCP server questions

Does Sidemail have an official MCP server?

Yes. Sidemail publishes its MCP server itself. Sidemail's own documentation describes it. MartechDB only lists servers a vendor publishes, never community copies.

What is the Sidemail MCP server URL?

The address is https://api.sidemail.io/mcp.

How do I connect Sidemail MCP to Claude, ChatGPT or Cursor?

In Claude, add https://api.sidemail.io/mcp as a custom connector (Customize, Connectors, Add custom connector). In Cursor, use the Add to Cursor link on MartechDB's page, or paste the JSON settings into your mcp.json. In Claude Code, run: claude mcp add --transport http sidemail https://api.sidemail.io/mcp

What can the Sidemail MCP server do?

It offers 43 tools, including list-domains, create-domain, check-domain, setup-domain-mail-from and delete-domain (as its documentation names them, read on 1 Nov 2026).

Is the Sidemail MCP server in the official MCP Registry?

No. Sidemail hasn't published it to the official MCP Registry.

Is the Sidemail MCP server working?

Yes. It answered our most recent check. We last checked it on 1 Nov 2026.

What are the alternatives to Sidemail's MCP server?

In Email delivery & deliverability, the most agent-friendly alternatives with an official MCP server are G-Lock Software (92/100), Usebouncer (91/100), Bird (89/100), Unspam.email (88/100) and Resend (85/100). Sidemail scores 65/100 on the same index.

Alternatives to Sidemail's MCP server

Vendors in Email delivery & deliverability with an official MCP server, the most agent-friendly first. Sidemail scores 65/100.

G-Lock Software

G-Lock Software

glockapps.com

92/100
Usebouncer

Usebouncer

usebouncer.com

91/100
Bird

Bird

bird.com

89/100
Unspam.email

Unspam.email

unspam.email

88/100
Resend

Resend

resend.com

85/100
Compare all 24 Email delivery & deliverability vendors →

Change history

What we've seen change for Sidemail, newest first.

  1. Sidemail: Added to MartechDB with Sidemail MCP server

Use with AI

Connect your AI to MartechDB

Then ask it about Sidemail, or any of the 1,698 marketing tools with an official MCP server. Free, no sign-in.

Claude.ai and Claude Desktop

  1. Open Customize, then Connectors.

  2. Click +, then Add custom connector.

  3. Name it MartechDB, paste the address below and click Add. There's no sign-in.

The free plan allows one custom connector. On Team and Enterprise plans, an owner adds the connector first.

Show that your MCP server is verified

If you work at Sidemail, add this badge to your MCP docs or README. It's free, it's the same for every vendor, and it updates from our daily checks: it shows uptime while the server responds, and says so if it stops.

Official MCP server, verified by MartechDB
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