OTP and verification codes
Time-sensitive codes need fast injection and clear delivery status. Piisend exposes send APIs, per-message logs, and webhooks for bounces and complaints.
Related docsUse cases
Email your users actually need
Transactional, marketing, and lifecycle mail—each pattern maps to a docs chapter and the same REST API.
Transactional Auth Password resets and magic links
Security-sensitive mail benefits from template versioning, domain alignment, and suppression lists so you do not mail inactive addresses.
Related docsCommerce Receipts and order confirmations
High-trust content pairs with structured events so support teams can trace a single message end-to-end.
Related docsMarketing Marketing and promotional campaigns
Product launches, newsletters, and promotions use the same API, templates, and deliverability tooling as transactional mail.
Related docsLifecycle Product and lifecycle notifications
Welcome series, plan changes, and digests stay predictable when templates and API keys are scoped per environment.
Related docs
Every pattern above uses the same POST /api/v1/emails surface—templates, domains, and webhooks are optional layers you add as you grow.