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Category: Email Deliverability

Practical guides to domain authentication, sender reputation, routing, and reliable email delivery.

Cold Email Infrastructure for AI Agents

Design cold email infrastructure for AI agents with scoped sending accounts, provider-based caps, safe retries, reply handling, and suppression controls.

Sendmux Team avatarSendmux Team8m
An AI agent routes email through a scoped control layer to three owned sending accounts

SSE vs Webhooks: Which Pattern Fits Your Job?

Compare SSE and webhooks by connection direction, recovery model, network boundary, and delivery responsibility, with a practical Sendmux implementation guide.

Sendmux Team avatarSendmux Team6m
SSE and webhook delivery paths compared across one connected system

Email Webhooks for Reliable Inbound Mail

Build reliable email webhooks with exact signature checks, event-ID deduplication, durable acceptance, safe retries, and worker-based processing.

Sendmux Team avatarSendmux Team7m
An email event passing through signature verification into a durable queue and worker
Sendmux avatarSendmux

Sendmux is email inbox API for AI agents - multi-provider SMTP routing, dedicated agent mailboxes, and token-saving structured parsing in one API. The Sendmux blog covers AI agents, email deliverability, and the infrastructure powering agentic communication.