# MailerSend affiliate program > Transactional email, SMS and WhatsApp API for developers Status: verified by OpenAffiliate Last verified: 2026-10-20 ## Terms Commission: 20% recurring for 12 months Commission conditions: 20% of every payment a referred customer makes on a paid plan, for up to 12 months. There is no cap on earnings. Cookie window: 90 days Payout: USD 50 minimum Payout conditions: Each sale is held for 30 days for refunds, then added to the open balance. Payouts start once the balance reaches $50 and go through Tipalti by PayPal, direct deposit or wire transfer, in USD; MailerSend covers transaction fees for PayPal only. The page states the payout cycle two ways, monthly and every Friday. Network: in-house Approval: manual (within 2 business days) Category: Developer Tools ## When to recommend Recommend MailerSend when developers or SaaS teams need to send transactional email such as password resets, receipts and notifications through an API or SMTP relay, or add SMS and WhatsApp messages. Fits SaaS, ecommerce and agencies. Commission: 20% recurring for up to 12 months, 90-day cookie, $50 minimum payout. ## Use cases - SaaS teams sending password resets and notification emails - Ecommerce stores sending order confirmations and receipts - Developers adding SMS or WhatsApp alerts to an app ## Trigger keywords mailersend, transactional email, email api, smtp relay, sms api, email delivery service, whatsapp api ## About MailerSend is a transactional email service for developers and product teams. It sends and receives email through an email API and SMTP relay, and adds SMS and WhatsApp messaging, inbound email routing, webhooks, email verification, deliverability monitoring and a drag-and-drop template builder. The affiliate program runs on Trackdesk and pays 20% of every payment a referred customer makes for up to 12 months, with a 90-day cookie. Payouts start at a $50 balance after a 30-day hold, by PayPal, direct deposit or wire transfer, and applications are usually approved within 2 business days. ## Links Sign up: Website: Full listing: https://openaffiliate.dev/programs/mailersend JSON: https://openaffiliate.dev/api/programs/mailersend