LayerCall alternatives

1

CosVoice

by cosvoice.com

A

A real phone number and email for your AI Chief of Staff. Calls, bookings by phone, summaries.

2

MCP

by dechonet.com

A

20 domain recon tools for AI agents: DNS, SSL, headers, email, subdomains, lookalikes, changes.

3

Shipmail

by shipmail-to

A

Shipmail MCP server for AI agent custom-domain email inboxes with REST API and webhooks.

4

ContrastAPI

by contrastcyber.com

B

55 tools, 7 Resources, Sigma rules, email SPF/DMARC, MITRE, CVE/KEV, risk_score. No key.

5

smbCloud Mail & Auth

by smbcloudXYZ

A

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

6

Monacloud

by monacloud.vn

B

Buy .vn/intl domains in VND, deploy apps, Postgres, email, VietQR pay — Vietnam MCP for AI agents

7

ParseAPI

by parseapi.com

A

Official ParseAPI MCP. Place, IP, email, phone, weather, currency lookups.

8

Palisade

by palisade.email

A

Monitor and manage email authentication (SPF, DKIM, DMARC, MTA-STS, BIMI) for your domains.

Email infrastructure for AI agents: send, authenticate domains, track delivery, diagnose issues.

Gives an AI agent a disposable email and a real UK phone number to test signup flows.

11

Hunter MCP

by scalably.io

B

Hunter.io MCP: domain search, email finder and verifier, enrichment, discovery, leads. 11 tools.

12

Anima

by anima-labs-ai

B

Give your AI agent an identity it owns: email inbox, US phone number, SMS, voice, and a vault.

13

Domain Deliverability Checker

by mambabuilt.com

B

Audit a domain email deliverability via Apify: SPF, DKIM, DMARC, MX, blacklist, catch-all, age.

14

AgentiSend

by fortuneflick

A

Transactional email API for AI agents: verified domains, a per-sender budget, and a kill switch.

15

DomainDNA: Tech Stack Detector, WHOIS & Domain Age API

by shawmena-dotcom

A

DomainDNA: a domain's tech stack, email security (MX/SPF/DMARC), TLS expiry and age in one record.

16

emailmd

by emailmd.dev

A

Render markdown into email-safe HTML, lint drafts for deliverability problems, and preview emails.

17

OpenOSINT

by OpenOSINT

C

AI-powered OSINT agent & MCP server. 16 tools: email, breach, IP, WHOIS, DNS, Shodan, GitHub & more.

18

Agent-Native Mail

by BuilderIO

A

Agent-Native Superhuman - email client with keyboard shortcuts and AI triage

19

Atomic Mail

by Atomic-Mail

A

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

20

Email Inbox API + Sending by Sendmux

by Sendmux

A

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

21

Local

by local-mcp.com

C

Let ChatGPT, Claude & Cursor use your Mac: email, calendar, iMessage, Teams, files. Local, free.

22

Imap

by nikolausm

A

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

23

three.ws Notifications

by nirholas

B

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

24

e2a — email for AI agents

by e2a.dev

A

Authenticated email gateway for AI agents — per-agent inboxes, HITL approval, SPF/DKIM verified.