DMARC for SaaS Teams: A Safe Enforcement Playbook
Map every SaaS sending identity, process DMARC aggregate reports, and move from monitoring to enforcement without breaking critical email.
Bounce Handling Guide for Reliable Email Workflows
Build a bounce handling pipeline that classifies DSNs, avoids duplicate retries, enforces recipient suppression, and processes signed email events.
Cold Email Batching: A Safer Scaling Workflow
Learn how to batch cold email with consent, authentication, quota-aware queues, retry controls, suppression, and measurable stop signals.
Email Inbox for AI Agents: The Complete Guide
An AI agent can send an email with one API call. The engineering starts when someone replies. An email inbox for AI agents is a mailbox that has an address, can store messages, can deliver events, and can receive and send messages in a controlled way. It is programmatically accessible and
DMARC Alignment: Relaxed vs Strict Modes
Learn how DMARC alignment connects the visible From domain to SPF or DKIM, when relaxed and strict modes pass, and how to diagnose failures.
Reply Threading: How Email Conversations Stay Linked
Learn how Message-ID, In-Reply-To, References, provider thread IDs, and raw-header checks keep email replies in the right conversation.
Best Email Attachments API for Developers
Choose an email attachments API pattern for base64, binary uploads, reference IDs, inbound downloads, agent workflows, security, and provider limits.
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.
Outlook Sending Limits: Current Caps and Fixes
Understand current Outlook and Exchange Online sending limits, read the main NDR codes, and configure application queues around mailbox and tenant caps.
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.
