How It Works

How Listomo's activity-based pricing keeps your costs low while giving you unlimited contacts and lists.

  • 3 min read · by Donn Felker · September 2025
How It Works

Listomo is the email marketing system that works with SendGrid (more providers coming soon) and uses activity-based list pricing.

But what does that mean?

What Listomo Provides for you …

Listomo provides unlimited contacts, unlimited email lists, multiple subscription forms, broadcasts, campaigns, subscription management, customized onboarding incentive emails, email tracking, disposable email and free email restriction support, API’s, Webhooks, MCP Server & AI Integration, and more.

What does Listomo not do?

The only thing Listomo does not do is deliver the email. Listomo performs the sending of the email, but the delivery of the actual mail is delegated to third party services like SendGrid, etc, which you will need to connect to.

In other words, you connect your Listomo account to your SendGrid email delivery account (more providers coming soon).

What You’ll Need

You’ll need a Listomo Account and SendGrid (more providers coming soon). You then provide the connection details in your List settings:

Settings

Activity-Based List Pricing

Listomo uses activity-based pricing, which means you only pay for the lists you actively use:

  • Base Price: $19/month includes 1 active list
  • Additional Active Lists: $5 per active list per month
  • Inactive Lists: FREE (unlimited)
  • Contacts: Unlimited across all lists

What’s an Active List? A list that has sent at least one email broadcast in the current billing period (last 30 days). If you don’t send emails to a list, it doesn’t count toward your bill.

Why This Pricing Model?

This pricing model benefits you in several ways:

  1. Pay Only for What You Use: Create as many lists as you need. Only active lists (those sending emails) count toward your bill. Inactive lists are completely free.
  2. Unlimited Contacts: No matter how many contacts you have across all your lists, you never pay more for contact count—only for active lists.
  3. Perfect for Multiple Projects: Have a blog, SaaS app, mobile app, and e-book? Create separate lists for each and only pay for the ones actively sending emails.
  4. Great for Agencies: Manage multiple client lists without worrying about costs for dormant projects or client lists in development.
  5. Seasonal Flexibility: Running seasonal campaigns? Lists only cost you when they’re active. Turn them off during quiet periods and pay nothing.
  6. Single Email Delivery Account: Use one SendGrid account across all your lists, keeping delivery costs predictable.

Why does this matter and why is this important?

Beyond our activity-based pricing, the bring-your-own-email-provider model matters for several reasons:

  1. Cost Control: With one Listomo account and one SendGrid account, you can manage unlimited lists that serve different purposes while keeping your email delivery costs predictable.
  2. Easy Client Management: If you’re an agency, easily manage multiple lists for your clients and transfer them to client accounts when ready. They just provide their email delivery details.
  3. Simplified Management: One platform to manage all your lists. Need separate accounts? Invite team members to different accounts and they can access lists in those accounts too.

Why doesn’t Listomo perform email delivery?

Email delivery, while seemingly simple, is a very complicated beast. Its rife with spam issues, regulations, and deliverability challenges. Therefore, we delegate the actual delivery to the industry experts (SendGrid), while we help you manage and grow your email lists.

About the author

Donn Felker @donnfelker

Donn is the founder of Listomo. He has worked as a programmer for 20+ years and has been building software products and email lists for just as long.