# Piisend > Piisend is an email API for developers: transactional mail (OTPs, resets, receipts) and marketing or promotional campaigns. REST API with curl, JavaScript, and Python examples; webhooks, verified domains, delivery logs, and a dashboard. Free tier with monthly quotas. ## Product - Marketing site: https://piisend.com/ - Use cases: https://piisend.com/use-cases - Pricing (USD): https://piisend.com/pricing - Alternatives hub: https://piisend.com/alternatives - Documentation index: https://piisend.com/docs - Quickstart: https://piisend.com/docs/getting-started - API reference: https://piisend.com/docs/api ## Positioning - Piisend supports **transactional** and **marketing/promotional** email (OTPs, resets, receipts, campaigns). - Integration is **REST over HTTPS** with curl, JavaScript, and Python examples—no published npm/pip SDK. ## Support - Contact: https://piisend.com/contact - FAQ: https://piisend.com/faq