Referral Email Campaign.
Romsplomp.

Rompslomp wanted to develop a referral program to acquire new customers through their strongest channel: existing users. Recommendations from acquaintances carry more weight than ads, so the challenge was to find a personal, low-threshold way for satisfied customers to invite their network — appealing to both the current user and the new customer.

Develop three personalized headers, each targeting a different stage in the user journey:

1. Satisfied user — invites them to gift a trial version.
2. Recipient — receives a personalized welcome email.
3. Referrer — receives a congratulatory message once their friend becomes a customer.

Data
✔ First name
✔ Company name

In a fresh, light Rompslomp style, we created three clear visuals: a gift with a bow for the invitation, a welcome image for the new customer, and a cheerful reward for the user once their friend became a customer. The campaign feels personal and accessible, makes the action immediately clear, and evokes positive brand associations. Customers perceive the email not as marketing, but as a personal tip from a friend — exactly what makes it so effective.