Litmus says email marketing returns $36 for every $1 spent — but that's an industry-wide average heavily skewed by mature e-commerce senders with massive lists. Your real ROI depends on your industry, list size, send frequency, conversion rate, and the actual cost of running campaigns including labor. This calculator uses cited industry benchmarks from Mailchimp's 2024 Industry Benchmarks Report, Klaviyo, HubSpot State of Marketing 2024, and Litmus, with eight vertical presets and MPP-aware open-rate guidance for the post-iOS-15 reality.
Apple's Mail Privacy Protection (iOS 15+, September 2021) pre-fetches email images for Apple Mail users, registering an "open" for every delivered message regardless of whether the user opened it. Apple's user share inflated industry open rates by 30-50% overnight. That's why post-2021 open rates routinely show 35-45% across verticals where pre-MPP they sat at 18-25%. The cleaner metric is CTR or Click-To-Open Rate (CTOR), since Apple doesn't simulate clicks. This calculator uses post-MPP benchmarks but flags the issue prominently.
Most email ROI calculators only include the SaaS tool cost ($30-300/mo for Mailchimp/Klaviyo/ConvertKit). That's a fraction of the real cost. Each campaign also costs design + copy + QA + send time, typically 1-4 hours. At a $50-150/hr fully-loaded rate, that adds $200-2,400/mo for a 4-campaign cadence. The calculator surfaces both, then computes true ROI as annual revenue ÷ (annual tool + annual labor cost). For solo freelancers, run our Freelance Rate Calculator first to get an honest hourly rate.
Litmus's $36 return per $1 spent is an industry-wide average, heavily skewed by mature e-commerce senders with massive lists, deep automation, and segmentation. For a solo entrepreneur sending broadcast newsletters with 2,000 subscribers and no tool integration, real ROI is more like 3-10×. Use it as an aspirational ceiling, not a baseline.
Apple's Mail Privacy Protection (iOS 15+, 2021) pre-fetches email images so Apple Mail registers an "open" for every delivered message regardless of whether the user opened it. Apple's user share inflated industry open rates by 30-50% overnight. The cleaner metric post-MPP is CTR or CTOR (clicks per open), since Apple doesn't simulate clicks.
Yes, ideally. Most freelancers spend $1-5 to acquire a subscriber via lead magnets, ads, or content. If your list grew over years organically, the acquisition cost is sunk. For new growth, run our CAC calculator alongside this one — sub acquisition cost should pay back within 2-4 months of email revenue at typical SaaS/e-com ROI.
Yes — and arguably better than at scale. Small lists have higher engagement, better segmentation possible, and direct relationships. The math here works at any size; just check that the absolute revenue justifies your tool + labor cost. A 500-person list with 5% conversion at $200 AOV makes more sense than a 50K-person list with 0.1% conversion at $20 AOV.
If your calculated ROI is <10×, you're paying too much for tools. Switch to MailerLite, Buttondown, or even a lean Substack. If ROI is 10-30×, the typical Mailchimp / ConvertKit / Beehiiv tier ($30-100/mo) is fine. Only Klaviyo (e-commerce) or HubSpot (B2B with sales handoff) make sense at $300+/mo if your conversion economics support it.
Sources: Litmus 2024 State of Email · Mailchimp 2024 Industry Benchmarks · Klaviyo Email Benchmarks · HubSpot State of Marketing 2024 · M+R Benchmarks 2024