What costs should be included when calculating email ROI?

Most email programs look cheap when you only count the tools. They look more expensive when you count the time. Both need to be in the denominator before you declare an ROI number.

Tools and platforms:

• ESP fees (per email sent or per contact stored, depending on your plan)
• List validation costs before major sends
• CRM or marketing automation software
• Analytics tools beyond your ESP's built-in reporting

Content production:

• Copywriting (in-house time or freelance fees)
• Design (email templates, graphics, photography)
• QA and testing across clients and devices

Staff time:

• Campaign setup, scheduling, and list segmentation
• Performance analysis and reporting
• Strategy and planning

The costs people most consistently forget: staff time and list validation. If email takes 15 hours a month and your time is worth $100/hour, that's $1,500 that should be in the denominator. Leave it out and your ROI looks dramatically better than it actually is.

So the formula: (Revenue from email minus total costs) divided by total costs, multiplied by 100. A $10,000 month of email revenue sounds impressive. If your real costs are $7,000 when you count everything, your ROI is 43%, not infinite. Still good. But knowing the real number is how you make better decisions about where to invest next.

If you're unsure what's costing what, a ROI maximization audit starts with getting every cost category on paper before you optimize anything. And if you need to factor in conversion tracking on the revenue side, that's the other half of the formula.

For help cleaning a list before a campaign (one of the hidden costs above), our list cleaning service at Review My Emails is priced per clean, no subscription required.