
How to Write a Re-engagement Email (With Examples That Actually Work)
Most re-engagement emails are too polite, too vague, or too late. Here's how to write one that actually wins subscribers back - and how to know when to stop trying.
All in one email marketing analytics platform.
Stop wasting hours copying metrics between platforms. Email Calculator automatically tracks revenue per campaign, connects 55+ APIs, provides AI-powered insights, and delivers automated health scores with actionable recommendations—all in one beautiful dashboard.

Acoustic
ActiveCampaign
ActiveTrail
Adobe Campaign
Amazon SES
AWeber
Benchmark
Brevo
Campaign Monitor
Constant Contact
ConvertKit
Customer.io
Drip
Eloqua
GetResponse
Acoustic
ActiveCampaign
ActiveTrail
Adobe Campaign
Amazon SES
AWeber
Benchmark
Brevo
Campaign Monitor
Constant Contact
ConvertKit
Customer.io
Drip
Eloqua
GetResponse
Acoustic
ActiveCampaign
ActiveTrail
Adobe Campaign
Amazon SES
AWeber
Benchmark
Brevo
Campaign Monitor
Constant Contact
ConvertKit
Customer.io
Drip
Eloqua
GetResponse
Acoustic
ActiveCampaign
ActiveTrail
Adobe Campaign
Amazon SES
AWeber
Benchmark
Brevo
Campaign Monitor
Constant Contact
ConvertKit
Customer.io
Drip
Eloqua
GetResponse
HubSpot
Klaviyo
Mailchimp
MailerLite
Mailgun
Mailjet
Moosend
Omnisend
Pardot
Salesforce
SendGrid
Shopify
Stripe
Typeform
Webflow
HubSpot
Klaviyo
Mailchimp
MailerLite
Mailgun
Mailjet
Moosend
Omnisend
Pardot
Salesforce
SendGrid
Shopify
Stripe
Typeform
Webflow
HubSpot
Klaviyo
Mailchimp
MailerLite
Mailgun
Mailjet
Moosend
Omnisend
Pardot
Salesforce
SendGrid
Shopify
Stripe
Typeform
Webflow
HubSpot
Klaviyo
Mailchimp
MailerLite
Mailgun
Mailjet
Moosend
Omnisend
Pardot
Salesforce
SendGrid
Shopify
Stripe
Typeform
Webflow
Everything you need to know about Email Calculator
Email Calculator is a campaign analytics platform that helps marketers measure and optimize email performance. Connect 55+ platforms or enter data manually. The platform calculates KPIs like open rate, CTR, CTOR, ROI, and conversion rate in real time with visual analytics and recommendations.
Free — Up to 3 reports, manual data entry, AI (with your API key), Campaign Story, Compare, and chart customization.
Starter — £9/mo or £90/yr — Full platform access, 500 API requests/month, 5,000 synced records/month, all integrations, AI insights, scheduled reporting, and exports (PDF, PowerPoint, Excel, Word, HTML, CSV).
Growth — £29/mo or £290/yr — Everything in Starter, plus 5,000 API requests/month, 100,000 synced records/month, 3 workspaces, 3 team members, and white-label options.
Scale — £79/mo or £790/yr — Everything in Growth, plus 25,000 API requests/month, 500,000 synced records/month, 10 workspaces, 10 team members, and priority support.
Yes. Start free with up to 3 reports using manual data entry. Upgrade to Starter, Growth, or Scale when you need API integrations, exports, and higher limits. Your existing reports carry over automatically. No credit card required to start.
Email Calculator connects to 55+ platforms: Email (Mailchimp, Klaviyo, HubSpot, Brevo, ActiveCampaign, SendGrid, and more), ROI (Shopify, WooCommerce, Stripe, PayPal, Square, and more), and Lead (Typeform, Google Forms, Jotform, Calendly, and more). Visit the Platforms page for the full list.
No. The Free plan works with manual data entry — no API keys needed. API integrations are available on paid plans. Add your platform API keys in settings to enable automatic data syncing.
Email marketing strategy, campaign benchmarks, metrics guides, and reporting best practices. Written for marketers who want better results.

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