CronMail
Automate, personalize, and scale your cold email campaigns.
CronMail is a smart cold email automation tool by CronBoost that handles multi-SMTP rotation, custom templates, follow-up sequences, and performance tracking, built for agencies and creators.
in production
CronMail is a powerful cold email automation platform developed by CronBoost. It helps businesses, creators, and agencies automate outreach while maintaining personalization and high deliverability.
Built with a modern backend using Node.js, Express, and MongoDB, CronMail supports multi-SMTP rotation, scheduled queues, and AI-optimized templates. Whether you’re running B2B campaigns, client onboarding emails, or follow-up sequences, CronMail ensures your messages reach the inbox efficiently.
From template-based personalization to automatic follow-ups and status tracking, CronMail provides full control and transparency over your email campaigns — all from one clean dashboard.
Key Features
- Multi-SMTP rotation for better deliverability
- Template-based email automation
- Custom initial and follow-up sequences
- Email queue with built-in delay system
- Real-time email status logs and tracking
- Supports multiple campaigns and user accounts
- Secure API for integration and scaling
Benefits
- Save hours by automating outreach
- Increase reply rates with personalized follow-ups
- Reduce spam risk using rotating SMTPs
- Manage all campaigns in one dashboard
- Track performance and optimize delivery
Use Cases
- Digital agencies managing multiple clients
- Startups running investor or partnership outreach
- Freelancers promoting services via cold emails
- Marketing teams running product announcements
- Businesses following up with leads automatically
Technology Stack
- Node.js
- Express.js
- MongoDB
- Nodemailer
- AWS SES
- Cloudflare DNS
Common questions
- How much does CronMail cost?
- CronMail is $199, paid once. It is not a subscription, so the cost does not grow with the number of emails you send.
- How does CronMail improve deliverability?
- It rotates sending across multiple SMTP servers rather than pushing everything through one, and it queues messages with a built-in delay rather than sending them in a burst. Both are the things that keep cold outreach out of the spam folder.
- Does CronMail handle follow-ups automatically?
- Yes. You define an initial email and a follow-up sequence, and CronMail sends them on a schedule, with real-time status logs so you can see what was delivered and what was not.
- Who is CronMail for?
- Digital agencies running outreach for several clients, startups doing investor or partnership outreach, freelancers promoting their services, and marketing teams announcing a product.
- Can I connect CronMail to my own systems?
- Yes. CronMail exposes a secure API, so you can trigger campaigns and read status from your own software rather than working only through the dashboard.
- What is CronMail built with?
- Node.js, Express, and MongoDB on the backend, with multi-SMTP rotation, scheduled queues, and template-based personalisation layered on top.
We built CronMail. We can build yours.
CronMail is our own product, designed, built, and operated in-house. The same engineering is what we bring to client work under Automate: automation, AI integration, and technical SEO.
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