
Mailwarm
Folderly
Warmbox.ai
Warmup Inbox
Lemwarm by Lemlist
MailReach.co
InboxAlly
We don't send emails. We get them seen.

Customer.io
AppFlows
Drip
Ortto
Lifecycle email automation your AI agent runs over MCP. Send app events through a REST API and manage flows, segments and campaigns from your agent.

Which is more popular?
Based on our record, Warmy.io seems to be more popular. It has been mentioned 5 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | warmy.io | rngmstr.dev |
| Pricing | ||
| Platforms | — | |
| Company | Startup from Israel · 100 - 249 employees · 2021 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Warmy.io is a cloud-based SaaS solution for email deliverability and email warmup services. This AI-powered email warmup tool provides a full suite of tools to help businesses and marketers improve their email sender reputation, ensuring emails land in the inbox and not the spam folder. Here’s...
Ringmaster is lifecycle email automation built for apps and AI agents. Your app sends events through a REST API, and your agent manages flows, segments and campaigns over MCP from clients such as Claude, ChatGPT, Claude Code and Cursor. Ringmaster schedules each step for the recipient’s daytime,...
What each product offers, as listed by its team.


No features have been listed yet.
Walkthroughs and reviews on video.
The Complete Warmy.io Overview 🔥
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Warmy.io and Ringmaster.dev. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Warmy.io: AI-personalized warm-up messages, topic selection, auto-archive, and automated monitoring. Focuses on safe, global automation and multi-language flows for international teams.
Warmy emphasizes automation and expansive mailbox coverage. It supports incremental sending, reply simulation, and spam recovery, with options to adjust pacing and review mailbox-level results at a glance.
Warmy provided a real person for a solid one-hour onboarding that got us up and running promptly. Dashboard is easy to use and the options for warming up and plenty of options for maintaining inbox health and placement .
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Recommendations tracked on public social media and blogs since March 2021.


As professionals in the field, we understand the struggles that come with ensuring your messages land in the right place. But fear not, for Warmy.io is here to help you overcome the challenges of email deliverability! Our cutting-edge... Source: over 3 years ago
Check http://warmy.io to empower YOUR commercials email deliverability. Source: over 3 years ago
However Warmy is number one expert in Email Deliverability, join us and get 7 days free trial warmy.io. Source: over 3 years ago
Tracking Ringmaster.dev since Nov 2026.
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Warm up your cold email inbox, and never land in spam anymore!
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