Why We Built Our Own Bulk Email System (And Why You Should Too)

Tired of paying per-subscriber fees? Here's why self-hosted email infrastructure beats SaaS platforms for businesses that send at scale.

Sanjay Mandal · · 6 min read

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Every business eventually hits the email wall. You've grown your subscriber list to 10,000, then 50,000, then 100,000 — and suddenly your email platform bill has gone from reasonable to ridiculous.

Mailchimp's Standard plan charges ₹2,800/month for 5,000 contacts. At 50,000 contacts, that jumps to ₹28,000/month — that's ₹3.36 lakhs per year just to send emails. ConvertKit, ActiveCampaign, and Klaviyo follow similar pricing models. The math doesn't scale.

The hidden cost of SaaS email platforms:

Every subscriber you add increases your monthly bill. Every campaign you send costs more. As your business grows, your email costs grow linearly — sometimes faster than your revenue.

Beyond the cost, there's the data privacy concern. Your email list is one of your most valuable assets. Hosting it on a third-party platform means you don't truly own it. If the platform changes its pricing, goes down, or has a security breach, your business is affected.

What self-hosted email infrastructure gives you:

Full ownership of your subscriber data. Your email list lives on your own server. No third party ever touches it. For businesses in regulated industries — legal, finance, healthcare — this is non-negotiable.

Zero recurring subscriber fees. You pay once for the infrastructure setup and configuration. After that, your only cost is the server (which is typically a fraction of SaaS platform fees).

High-deliverability SMTP routing. With proper SPF, DKIM, and DMARC configuration, combined with intelligent IP warm-up and reputation management, your emails land in inboxes — not spam folders. You control your sender reputation directly, instead of sharing it with thousands of other businesses on a shared platform.

Custom campaign automation. Trigger-based sequences, behavior-based segmentation, drip campaigns — set them up once and let them run. No limits on the number of automations or sequences you can create.

The numbers:

Let's compare: a business with 50,000 subscribers sending weekly campaigns.

  • Mailchimp Standard: ₹28,000/month = ₹3,36,000/year
  • ConvertKit Creator: ₹15,000/month = ₹1,80,000/year
  • MaysanMails (self-hosted): One-time ₹2,49,999 setup + ~₹12,000/year server cost

Year 1 savings: ₹74,000+ vs ConvertKit. Year 2 savings: ₹1,68,000+. The gap only widens as your list grows.

Is self-hosted right for you?

Self-hosted email infrastructure is ideal if: - You have 10,000+ subscribers and are paying ₹5,000+/month for email - Data privacy and compliance are critical to your business - You need unlimited automations without per-feature pricing - You want complete control over your sender reputation

It's not for everyone. If you're just starting out with a few hundred subscribers, a SaaS platform is simpler. But once you cross the threshold where email becomes a significant cost center, self-hosted infrastructure pays for itself within months.

What MaysanMails includes:

SMTP server setup with SPF, DKIM, and DMARC configuration. Custom sender reputation warm-up. Campaign automation workflows. Real-time delivery analytics dashboard. 30 days of post-launch support and monitoring.

Want to learn more? Check out MaysanMails or book a scoping call to discuss your email infrastructure needs.

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Written by Sanjay Mandal at Maysan Labs, a software studio in Gurgaon, India. Follow us on LinkedIn