Nitrosend

Nitrosend

Nitrosend Pty Ltd
Ringmaster

Ringmaster

ZNZ Systems
+
+

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About

Nitrosend brings branded email campaigns, automated flows and transactional messages into one workspace. Teams can draft and review in the dashboard, use the CLI and REST API from their applications, or work through Claude, ChatGPT, Cursor and other agents over MCP. Agencies can manage separate client brands, transfer account ownership and stay on the team. Build signup journeys from product events, send order confirmations, test messages, and review before campaigns go live. The free plan includes campaigns, flows, transactional email and MCP/API/CLI access with unlimited contacts; paid plans increase sending capacity and team limits.

About

Ringmaster is a hosted lifecycle email platform for software teams using application events and AI agents to coordinate customer messaging. Applications send events through a REST API; AI agents connect over the Model Context Protocol (MCP) to build and manage email flows, segments and campaigns. A dashboard provides access to the same flows and results. Features include event-triggered sequences, audience targeting and campaign management. Server-side controls support idempotent events, duplicate-send prevention, daytime delivery, consent checks, unsubscribes and suppressions. Flows can skip recipients who completed the intended action. Teams can use Ringmaster for onboarding, product education, re-engagement and other lifecycle messaging. The monthly plan includes unlimited flows, campaigns and segments and 10,000 emails; additional volume is available on request.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Agencies managing client email, SaaS and ecommerce teams, content marketers, and developers building lifecycle or transactional email.

Audience

SaaS companies, software development teams and businesses that want event-driven customer lifecycle email automation managed by AI agents over MCP.

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Not Supported

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

$0
Free forever: $0, 8,000 emails to start then 500/month; unlimited contacts, 1 seat and 3 brands. Pro: $20/month for 20,000 emails; Ultra: $100/month for 125,000 emails. Enterprise starts at $300/month, with volume-based email limits. Prices are in USD.
Free Version Supported
Free Trial Not Supported

Pricing

$300/month
The flat plan costs $300 per month and includes 10,000 emails per month, unlimited flows, campaigns, and segments. Additional email volume is available on request.
Free Version Not Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Nitrosend Pty Ltd
Founded: 2026
Australia
nitrosend.com

Company Information

ZNZ Systems
Founded: 2023
United Kingdom
rngmstr.dev

Alternatives

Alternatives

ClevMail

ClevMail

DeviDevs Technologies S.R.L.
Caltrixio

Caltrixio

Caltrixio, Inc.
Nitrosend

Nitrosend

Nitrosend Pty Ltd

Categories

Email Marketing Supported

Categories

Email Marketing Supported

Integrations

ChatGPT Supported
Claude Code Supported
Cursor Supported
Model Context Protocol (MCP) Supported
Amazon SES Supported
Attio Supported
Claude Not Supported
Claude Cowork Supported
Gemini CLI Supported
Grok Bot Supported
Mailgun Supported
OpenAI Codex Supported
Postmark Supported
Resend Supported
SendGrid Supported
Visual Studio Code Supported

Integrations

ChatGPT Supported
Claude Code Supported
Cursor Supported
Model Context Protocol (MCP) Supported
Amazon SES Not Supported
Attio Not Supported
Claude Supported
Claude Cowork Not Supported
Gemini CLI Not Supported
Grok Bot Not Supported
Mailgun Not Supported
OpenAI Codex Not Supported
Postmark Not Supported
Resend Not Supported
SendGrid Not Supported
Visual Studio Code Not Supported
Claim Nitrosend and update features and information
Claim Nitrosend and update features and information
Claim Ringmaster and update features and information
Claim Ringmaster and update features and information