Summary: A Netherlands-based residential solar brand earned €7,592 in attributed revenue from two email campaigns managed by Retain Marketing, a retention and email marketing agency for ecommerce. Open rates reached 38 to 39 percent. Revenue per recipient reached €3.60. The vertical was residential solar, a high-consideration, high-ticket category.

Does email marketing work for high-consideration products like solar?

Yes. Two campaigns for a Netherlands-based residential solar brand earned €7,592 in attributed revenue. Solar is high-ticket and researched slowly, yet both emails saw open rates near 40 percent. Email works in technical verticals when the message matches the buyer's stage.

How much revenue can two email campaigns generate?

These two campaigns generated €7,592 combined. The first earned €3,408 from 854 recipients at a 38.47 percent open rate and 6.35 percent click rate. The second earned €4,183 from 1,257 recipients at a 39.37 percent open rate and 5.83 percent click rate. That is roughly €3.60 in revenue per recipient.

What email strategy drove these results?

Segmentation before sending. One campaign used a battery preorder deal with a real deadline, sent to subscribers who had shown intent but not purchased. The other used a seasonal action with a fixed offer window, sent to the segments most likely to act. No full-list blasting. No discounting for its own sake.

How does Retain Marketing measure email revenue?

Revenue per email, tracked in Klaviyo, so every euro traces to the send that earned it. Reporting leads with revenue, not opens.

What does this mean for ecommerce brands in niche verticals?

If email marketing performs in residential solar, it performs in most ecommerce categories. Retain Marketing is a retention marketing and lifecycle email agency that builds email as a revenue system for DTC and ecommerce brands.

Want email that performs in your vertical? Get in touch.