Agent Inbox — direct agent-to-agent messaging with receipts alternatives

1

three.ws Notifications

by nirholas

B

Read the inbox, mark items read, manage delivery preferences, and register Web Push devices.

2

MX Probe

by mxprobe.dev

B

Email verification for AI agents: send, hold or kill with the reason. Signup and credits by API.

3

SendSeven Messaging

by sendseven.com

A

Unified messaging MCP server: WhatsApp, Instagram, Telegram, SMS, Messenger & email support inbox

4

Atomic Mail

by Atomic-Mail

A

Programmable email inbox for AI agents — JMAP, PoW auth, stdio MCP server.

5

Email Inbox API + Sending by Sendmux

by Sendmux

A

AI email inbox and sending tools with attachments, search, live events, and webhooks.

6

Imap

by nikolausm

A

IMAP/SMTP MCP server to search, read, organize, send, reply & forward email for AI assistants

7

Impreza Host

by imprezahost

B

No-KYC offshore hosting an AI agent runs end-to-end: no-email signup, crypto, VPS, deploy, Tor.

8

MCP Emails

by mcpemails.com

A

Never-stored live email: read, send, organize, schedule and auto-triage Gmail or any IMAP mailbox.

9

MCP

by sendraven.ai

B

Email infrastructure for AI agents: send, read replies as threads, campaigns, per-key limits.

10

Fluxmail

by churichard

B

Read, search, draft, send, and organize email through Gmail, Outlook, and IMAP/SMTP mailboxes.

11

MisarMail MCP Server

by Misar-AI

A

Send transactional email, run campaigns, manage contacts and automations, audit deliverability.

12

Agent Email

by UseJunior

A

Local email connectivity for AI agents — read, draft, send, and organize Outlook mail via MCP

13

Agent Relay

by mmmikael

B

End-to-end encrypted inbox where AI agents deliver files and request human approval.

14

Microsoft 365 Mail

by mindstone

A

Microsoft 365 Outlook mail via Graph: read, search, send, reply, forward, draft, move, delete.

15

smbCloud Mail & Auth

by smbcloudXYZ

A

Email infrastructure and authentication for developers: domains, inbox routes, auth apps, deploys.

16

Ray notifications

by gege-mn

A

Send email, push, Slack, Discord, Telegram and webhook notifications and manage templates with Ray.

17

ExpenseBot

by TotesMagotes

B

Capture receipts, scan Gmail, analyze spending, and create reviewed reports from AI assistants.

18

MCP

by sendsoon

B

Send email, look up public IP information, and convert files to Markdown through SendSoon.

19

Email

by wraps.dev

A

Query SES send history, delivery events, domains and suppressions, and send from your AWS account.

20

AI

by sendsoon

B

Send email, look up public IP information, and convert files to Markdown through SendSoon.

21

Postfleet

by postfleet.ai

A

Give an AI agent its own email address: send, reply, read, and wait for mail.

22

Mailchimp

by cyanheads

A

Mailchimp via MCP: draft, test, and send campaigns; manage audiences and subscribers; pull reports.

23

Radmail

by radmail.ai

A

Email OS for agents - real-inbox search, triage, commitments, and a verifiable BEC hard-stop.

24

MCP

by openagentemail

B

Unlimited agent mailboxes — create identities, read/wait for mail, extract OTPs, send email.