Free SaaS upgrade email template with a Free vs Pro plan comparison table. A clean, responsive HTML upsell email with an illustrated hero, a bold "Upgrade to Pro" call-to-action and a feature-by-feature checklist — great inspiration for SaaS, cloud and developer-tool companies running plan upgrade, upsell and freemium-to-paid conversion campaigns. Customize it in the drag-and-drop email builder and export to Mailchimp, Klaviyo, HubSpot or any ESP.
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