Aritic Mail vs Posta

Aritic Mail has no write-up on Specifiction yet; its figures are above.

Posta is a free, AGPL-3.0 self-hosted platform for sending and receiving email through an HTTP API. It supports API sending, SMTP relay, inbound mail, and website form submissions. The REST API handles transactional, batch, and templated messages with attachments, scheduling, retries, and priority queues. Incoming mail can arrive through built-in SMTP with TLS or an authenticated webhook, with forwarding and real-time SSE notifications. Templates offer versioning, localization, visual editing, and preview; campaigns add scheduling, A/B testing, and send-rate throttling. Posta supports multiple SMTP providers, SPF, DKIM, and DMARC verification, plus SDKs for Go, PHP, Java, and .NET. Security controls include hashed API keys, optional expiration and IP allowlists, JWT authentication, roles, two-factor authentication, rate limiting, and session management. It runs on customer infrastructure, with Docker Compose startup, isolated workspaces, data import/export, and GDPR deletion tools.