What's the most cost-effective way to run a growing paid newsletter using newsletter publishing software?

The most cost-effective setup is usually:

1. Start with an all-in-one newsletter platform that includes sending + payments + basic analytics

   • Examples: Beehiiv, ConvertKit, MailerLite, Substack
   • For a growing paid newsletter, this avoids paying for separate email delivery, landing pages, and payment handling.

2. Choose a platform with low fixed costs and decent paid-subscriber economics

   • You want:
     • low monthly base fee
     • reasonable payment processing
     • ability to segment free vs paid subscribers
     • automated paywall/onboarding
     • easy migration later if needed

3. Use Stripe-connected billing if possible

   • This keeps payment processing straightforward and usually cheaper than custom billing systems.
   • Avoid building your own billing stack unless you’re at large scale.

4. Keep the tech stack minimal

   • Best “lean” stack:
     • newsletter platform
     • Stripe
     • simple website/landing page
     • optional referral or analytics tool later
   • Don’t add CRM, marketing automation, or custom app features until you need them.

Best value by stage

If you’re just starting paid subscriptions

• Substack is often the cheapest operationally because it has:
  • no monthly software fee
  • built-in hosting, email, paywall, and payments
• Tradeoff: platform fees and less control over branding/data.

If you’re growing and want more control

• Beehiiv or ConvertKit are often better long-term:
  • stronger ownership of audience
  • more flexible segmentation and automations
  • better branding/control than Substack
• Tradeoff: you’ll pay a monthly platform fee.

If you want the lowest software cost and basic features

• MailerLite can be very cost-effective:
  • low entry price
  • solid email tools
  • forms/landing pages
• Tradeoff: paid newsletter workflows may be less polished than more creator-focused platforms.

Cost-effective rule of thumb

• Under ~1,000 paid subscribers: pick the simplest platform that handles billing and delivery well.
• 1,000–10,000: optimize for automation, retention, and list segmentation.
• 10,000+: compare total cost of ownership, including fees, deliverability, and time saved.

What usually saves the most money

• Reducing churn through:
  • annual plans
  • strong onboarding
  • renewal reminders
  • subscriber segmentation
• Using one platform instead of several
• Avoiding custom development
• Keeping your free-to-paid conversion funnel simple

My practical recommendation

• If you want lowest upfront cost: Substack
• If you want best balance of cost + control for growth: Beehiiv
• If you want a general email platform with solid economics: MailerLite or ConvertKit

If you want, I can also give you a side-by-side cost comparison table for Substack, Beehiiv, ConvertKit, and MailerLite based on subscriber count.