Sendinblue (now Brevo) offers a dual-commission affiliate program that provides both breadth and depth of earning potential. The structure is compelling: affiliates earn €5 for every free account signup and €100 for each paid conversion. This two-tiered approach means you can generate income even from users who start with the free plan, while the €100 per sale reward makes each premium conversion worthwhile. As a widely adopted email marketing and CRM platform competing with Mailchimp and ActiveCampaign, Sendinblue benefits from strong brand recognition and a generous free tier that drives high signup rates. The platform appeals to small businesses, bloggers, and e-commerce operators, giving affiliates a broad target audience. On the downside, the €100 flat rate per sale is decent but not exceptional compared to recurring models offered by competitors like ConvertKit or GetResponse. The conversion from free to paid can also take time, requiring patience. Well-suited for marketing bloggers and business tool review sites with consistent traffic.