109+ email marketing tools
Campaign Performance
Core calculators for opens, clicks, conversions, testing, and campaign comparisons.
Campaign Performance Calculator
Get a full performance overview: open rate, CTR, CTOR, conversion rate, and revenue per email in one place.
Subject Line Analyzer
Score your email subject lines for length, spam triggers, sentiment, and mobile rendering. Get AI suggestions.
Email Open Rate Calculator
Calculate your email open rate, unique open rate, and total open rate from your campaign data.
Click-Through Rate Calculator
Calculate CTR, unique CTR, and click-to-open rate (CTOR) for any email campaign instantly.
Click-to-Open Rate (CTOR) Calculator
Calculate CTOR to measure email content engagement. See what percentage of openers clicked your links.
Email Conversion Rate Calculator
Calculate your email campaign conversion rate and revenue per email sent. Track actual business outcomes.
Email A/B Test Significance Calculator
Discover if your A/B test results are statistically significant or just random chance. Calculate winner confidence.
Email A/B Test Sample Size Calculator
Find out how many recipients you need per variant for statistically significant A/B test results.
Email Click-to-Convert Rate Calculator
Measure how many clicks actually convert. Understand your drop-off from engagement to action.
Email Segmentation Lift Calculator
Compare generic and segmented campaigns to calculate incremental conversions, revenue, and profit.
Email Spam Score Checker
Check your email content against common spam filter triggers and risky patterns before sending.
Email Preheader Optimizer
Check your preview text length, content, and mobile truncation preview.
Email Readability Score
Analyse your email copy readability based on sentence length and word complexity.
Email CTA Click Rate Calculator
Measure the performance of individual CTAs and compare against overall campaign click rates.
Email Industry Benchmark Comparator
Compare your email metrics against industry averages to see where you stand.
Email Subject Line Character Counter
Check subject line length against desktop and mobile truncation limits with live preview.
Email Alt Text Checker
Paste email HTML to check which images have missing or empty alt attributes.
Email Link Verifier
Check email HTML for broken links, missing hrefs, and inaccessible link text before sending.
Email Campaign Planner
Project opens, clicks, conversions, and revenue before you send your next campaign.
Email UTM Builder
Build trackable UTM links for your email campaigns so you can measure performance in analytics.
Email Mobile Preview Checker
See how your subject line and preheader will look on a mobile inbox before you send.
Email Dark Mode Preview
Preview how your email colours and text will render in light and dark mode clients.
Email Accessibility Checker
Check your email content for common accessibility issues like missing alt text, poor contrast, and weak link text.
Email Rendering Test
Score your email HTML for common rendering issues across email clients.
Email File Size Checker
Estimate your email file size and check if it will trigger Gmail clipping.
Email Image-to-Text Ratio Checker
Check the balance of images and text in your email to avoid spam filter issues.
AI Inbox Summary Preview
See how Gmail, Outlook and Apple Mail AI will summarise your email before your subscriber opens it. Optimise your first two lines.
Subject Line Emotion & Curiosity Scorer
Score subject lines for curiosity, emotion, and urgency — the psychological levers that drive opens and clicks.
Email Preheader Generator
Generate subject line and preheader ideas that work together to earn the open.
Email Urgency & Scarcity Checker
Scan email copy for urgency and scarcity language — the persuasion levers that lift clicks, and the fake signals that hurt trust.
Gmail Clipping Predictor
Estimate your email HTML size and check whether Gmail will clip it over the 102KB limit.
Revenue and ROI
Translate email activity into revenue, profit, forecasts, and business value.
Email ROI Calculator
Calculate the return on investment for your email campaigns. See revenue per email and break-even point.
Email Revenue Per Campaign Calculator
Calculate total campaign revenue, revenue per email sent, and revenue per open. Measure the direct financial impact of every send.
Email Revenue Per Email Sent (RPE) Calculator
Calculate RPE — the most direct measure of email performance. See exactly how much each send generates.
Email Revenue Per Open Calculator
Calculate monetary value of each email open. Optimize campaigns based on what each open actually generates.
Email Revenue Forecast Calculator
Project future email revenue based on list size, engagement rates, and conversion data. Set realistic growth targets.
Email Revenue Loss Calculator
Calculate how much revenue you're losing from declining open rates or CTR. See the cost of poor performance.
Email Campaign Break-Even Calculator
Find exactly how many conversions your campaign needs to cover its cost. Know your minimum before you send.
Email Campaign Efficiency Calculator
Calculate revenue per hour of email effort. Understand which campaigns deliver the best return on time invested.
Email Campaign ROI Comparison Calculator
Compare ROI across multiple email campaigns side by side. Find your best and worst performers instantly.
Email Campaign Payback Calculator
Calculate how many conversions and how much revenue you need to recover your campaign costs.
Email Campaign Cost Estimator
Estimate the full cost of an email campaign including design, copy, development and platform fees.
Email Attribution Calculator
Compare attribution models and see how different approaches distribute conversion credit.
Email Viral Reach Calculator
Estimate your total email reach including forwards and social shares.
Email Marketing Budget Calculator
Plan your total email marketing budget including ESP fees, team time, design, copy, and paid list growth.
Email Product Launch ROI Calculator
Estimate revenue, units sold, and ROI for a product launch email campaign.
Email Flash Sale ROI Calculator
Calculate the revenue and margin impact of a flash sale email campaign.
Email Back-in-Stock ROI Calculator
Estimate recovered revenue from back-in-stock notification emails.
Email Browse Abandonment ROI Calculator
Estimate revenue recovered from browse abandonment email flows.
Email Post-Purchase Upsell ROI Calculator
Calculate incremental revenue from upsell and cross-sell emails after purchase.
Email Webinar ROI Calculator
Measure the revenue and ROI from email-driven webinar registrations and attendance.
Email Attribution Sensitivity Calculator
See how much your revenue number changes across attribution models — and whether you can trust your reported ROI.
Subscriber Value and Growth
Understand list value, acquisition economics, growth quality, and subscriber lifetime value.
Revenue Per Subscriber Calculator
Calculate the value of each email subscriber. Understand subscriber value and annual revenue potential.
Subscriber Lifetime Value (LTV) Calculator
Calculate subscriber LTV based on purchase value, frequency, and lifespan. Know how much you can spend to acquire customers.
Email List Value Calculator
Find out what your email list is worth. Calculate total annual value, monthly value, and revenue per 1,000 subscribers.
Email Profit Per Subscriber Calculator
Calculate how much profit each subscriber generates per campaign, month, and year. Understand true subscriber value.
Email List Growth Calculator
Track your list growth rate, net subscriber change, and projected list size over time.
Email List Break-Even Calculator
Find out how many subscribers you need to recover list growth costs. See your profitability threshold.
Email Opt-In Rate Calculator
Calculate sign-up form conversion rate, cost per subscriber, and monthly subscriber growth. Measure how well your forms convert.
Email Growth Efficiency Calculator
Calculate cost per engaged subscriber and growth efficiency score. Measure list growth quality, not just quantity.
Email Cost Per Subscriber Calculator
Calculate your ESP cost per subscriber and cost per 1,000 emails sent. Compare platform pricing effectively.
Cost Per Lead From Email Calculator
Calculate CPL from your email channel. Compare against paid advertising to prove email's value.
Email Cost Per Acquisition (CPA) Calculator
Calculate CPA, campaign ROI, and ROAS for any email send. Compare campaign efficiency and measure the true cost of every conversion.
Email RFM (Recency-Frequency-Monetary) Calculator
Score your subscribers by recency, frequency, and monetary value. Segment your audience by RFM score.
Email Customer Acquisition Cost (CAC) Calculator
Calculate your email CAC, LTV:CAC ratio, and payback period. Understand the true cost of acquiring customers via email.
Email Subscriber Equity Calculator
Project the future value of your email subscribers accounting for growth, churn and engagement.
Email List Segmentation Calculator
Calculate the revenue lift from sending targeted campaigns to a segmented audience.
Email Personalization ROI Calculator
Estimate the revenue lift from personalizing subject lines, content, and send times.
Email Referral Program ROI Calculator
Calculate the new customers and revenue generated by an email-driven referral program.
Email Loyalty Program ROI Calculator
Estimate incremental revenue from a loyalty program promoted and managed through email.
Email Lead Magnet ROI Calculator
Calculate the value of a lead magnet by estimating opt-ins, leads, and downstream customer revenue.
Email Landing Page Conversion Calculator
Calculate conversions and revenue from traffic driven by email to a dedicated landing page.
Email Pop-Up Conversion Rate Calculator
Measure how well your email pop-up converts website visitors into subscribers and revenue.
Email Customer Retention Rate Calculator
Calculate customer retention rate, churn rate, and revenue at risk from email subscribers.
Revenue Per 1,000 Subscribers Calculator
Normalise email revenue to per-1,000 subscribers so you can compare lists of any size on equal terms.
Deliverability and List Health
Calculate the cost of bounces, spam complaints, list decay, inbox placement, and hygiene.
Email Deliverability Calculator
Calculate delivery rate, bounce rate, and spam complaint rate to assess your sender reputation.
Email Deliverability Loss Calculator
Calculate revenue lost from emails not reaching the inbox. See the financial impact of spam and bounces.
Email Inbox Placement Rate Calculator
Calculate inbox placement rate, spam folder rate, and block rate. Understand where your emails are actually landing.
Email Bounce Rate Calculator
Calculate hard bounce rate, soft bounce rate, and total bounce rate. Monitor deliverability health.
Email Spam Complaint Rate Calculator
Calculate your spam complaint rate and check sender reputation health. See Gmail and Yahoo threshold benchmarks instantly.
Email Unsubscribe Rate Calculator
Calculate unsubscribe rate and assess list health. Monitor subscriber retention and deliverability impact.
Email Unsubscribe Cost Calculator
Calculate how much each unsubscribe costs your business. See monthly and annual revenue loss from churn.
Email List Decay Calculator
Calculate your list churn rate and discover how many subscribers you need to maintain or grow your audience.
Email List Quality Score Calculator
Get a comprehensive 0-100 quality score for your list. Benchmark engagement, deliverability, and retention.
Email List Cleaning ROI Calculator
Calculate ESP savings, recovered revenue, and payback from cleaning inactive or invalid subscribers.
Email List Churn Rate Calculator
Calculate your monthly and annualized list churn rate. Track subscriber loss from unsubscribes, bounces, and complaints.
Email Sender Reputation Checker
Estimate your sender reputation based on open rates, click rates, bounce rates, and complaint rates.
Email Authentication Health Check
Check your SPF, DKIM, DMARC, and other authentication protocol configuration status.
Email IP Warmup Planner
Plan your dedicated IP warm-up schedule with a day-by-day sending volume plan.
Email Blacklist Checker
Check if your sending IP or domain is listed on 10 major DNS blacklists including Spamhaus.
Email DMARC Record Generator
Build a DMARC TXT record for your domain in seconds. Protect against spoofing and improve deliverability.
Automation and Lifecycle
Estimate the impact of email flows, lifecycle campaigns, send timing, and engagement quality.
Email Automation ROI Calculator
Calculate the ROI of your email automation sequences. Compare revenue against costs and find your payback period.
Abandoned Cart Email Revenue Calculator
Estimate recovered orders, recovered revenue, profit, and ROI from abandoned cart email flows.
Welcome Email Series ROI Calculator
Calculate incremental revenue, profit, and ROI from converting new subscribers with a welcome sequence.
Email Winback Campaign Calculator
Calculate the ROI of reactivating inactive subscribers. Find your break-even reactivation rate and recovered subscriber value.
Email Frequency Calculator
Find your optimal email send frequency based on list health and engagement. Avoid fatigue, stay top of mind.
Email Send Time Optimizer
Find the best time to send emails based on industry research. Optimize send times for maximum engagement.
Email Forwarding Rate Calculator
Calculate forwarding rate and estimate organic reach beyond your list. Measure the virality of your campaigns.
Email Engagement Score Calculator
Get a single 0–100 score combining open rates, CTR, unsubscribes, and spam complaints. Track email health.
Email Engagement Value Calculator
Convert engagement metrics into monetary value. See what each open, click, and subscriber is actually worth.
Email Reply Rate Calculator
Calculate your email reply rate — the strongest engagement signal for Gmail and Outlook inbox placement.
Email Welcome Sequence Optimizer
Find the optimal welcome sequence length and timing for your audience.
Email Newsletter Frequency Planner
Find your optimal email send frequency based on engagement rates and content capacity.
Email GDPR Compliance Checker
22-point compliance checklist covering consent, privacy, data rights, and data management.
Email Drip Campaign ROI Calculator
Calculate the revenue and ROI from an automated drip email sequence.
Email Nurture Sequence ROI Calculator
Calculate how many leads a nurture sequence converts into customers and what that is worth.
Email Content Calendar Planner
Plan your send cadence and content capacity based on team hours and revenue goals.
Email List Fatigue Calculator
Find out whether your subscribers are tired of your emails and how send frequency is affecting engagement.
Send Time by Timezone Optimizer
Find the best send time for subscribers in any timezone so your audience opens instead of sleeping through it.