PostZen alternatives

1

Chatgenius

by SumCodeAI

B

ChatGenius tools: Instagram, Facebook, WhatsApp and SMS inbox, contacts, bookings, flows, posts.

Ephemeral HTTPS inbox for bots: mint URL, capture POSTs, list JSON. TEST. https://inbox.kymac.co

3

Atomic Mail

by Atomic-Mail

A

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

4

Email Inbox API + Sending by Sendmux

by Sendmux

A

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

5

Bird

by bird.com

A

Send and receive across email, SMS, WhatsApp, and voice. One API, one contract.

6

RuSender

by Rusender

A

Manage email campaigns, contacts and deliverability analytics in RuSender from an AI assistant.

7

SendSeven Messaging

by sendseven.com

A

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

8

Sendinel

by sendinel.ai

B

AI-controlled email ops for campaigns, contacts, segments, analytics, and sending.

9

octapi

by octapi.app

C

A business's WhatsApp front desk as tools: inbox, customers, catalogue, bookings, fees.

10

Anjal

by anjal.app

B

Email inboxes and calendars for AI agents: send, receive, search, draft and schedule.

11

GTD Brain

by gtdbrain.com

B

Getting Things Done (GTD) board: capture to Inbox, next actions by context, projects, waiting-for.

12

Website Email Extractor, Phone & Contact Finder (CSV, Sheet)

by Nero-Engine

C

Published emails, phones and social profiles for every website in a list, CSV or Google Sheet.

13

Space Monkey Mailchimp Dashboard

by igods.com

C

Mailchimp engagement intelligence for AI agents: campaign analytics and audience insights.

14

FranklyMail Agentic Inbox

by naylalabs

C

Read and search FranklyMail email and prepare drafts, replies, and forwards for human approval.