Blog
Guides on cold email infrastructure, deliverability and running outreach with AI agents. Every external fact lists its source and the date we checked it.
Articles
- AI agents
Safe AI Agent Access to Outbound Sales: Limits and MCP
How to give an AI agent access to outbound sales automation: server-side limits, budgets, approvals, a kill switch and scoped MCP tokens.
- Deliverability
SPF, DKIM and DMARC for Cold Email: Practical Setup
A practical SPF, DKIM and DMARC setup for cold email domains: example DNS records, alignment, rollout from p=none, and how to test the result.
- Infrastructure
Cold Email Infrastructure: Domains, Mailboxes, DNS
How to build cold email infrastructure: separate domains, mailbox providers and their sending limits, DNS records, and how to size mailboxes per domain.
- Deliverability
Cold Email Without Warm-Up: What to Do Instead
Email warm-up tools explained, what mailbox providers say about new senders, and a capped, stepwise ramp you can use instead of artificial traffic.
- Deliverability
Cold Email Deliverability: What Actually Moves It
What changes cold email deliverability: authentication, complaint and bounce rates, list quality, volume ramps and unsubscribe handling, with sources.
- Deliverability
One-Click Unsubscribe and the List-Unsubscribe Header
How one-click unsubscribe works under RFC 8058: List-Unsubscribe and List-Unsubscribe-Post headers, DKIM signing, the POST endpoint and common mistakes.