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Insights on cold email, deliverability, and scaling your outreach infrastructure.

Hero image for: Subdomain vs Root Domain for Cold Email: Which to Use
Deliverability|Jul 1, 2026

Subdomain vs Root Domain for Cold Email: Which to Use

A sending subdomain builds its own Gmail reputation separate from your root, so a cold-email burn never touches the brand domain your business actually runs on.

Hero image for: Custom Tracking Domain Setup (CNAME) for Cold Email
Deliverability|Jun 30, 2026

Custom Tracking Domain Setup (CNAME) for Cold Email

Custom tracking domain setup points a branded CNAME at your ESP's redirect host so opens and clicks resolve under your own domain, not a shared, listed one.

Hero image for: MTA-STS and TLS-RPT Configuration: A Sender's Guide
Deliverability|Jun 30, 2026

MTA-STS and TLS-RPT Configuration: A Sender's Guide

MTA-STS and TLS-RPT configuration for cold senders: publish the policy file, add two DNS records, run testing mode, then enforce TLS 1.2+ on inbound mail.

Hero image for: BIMI Setup for Cold Email Senders: Inbox Logos & Trust
Deliverability|Jun 29, 2026

BIMI Setup for Cold Email Senders: Inbox Logos & Trust

BIMI setup for cold email senders: the SVG Tiny PS logo, the VMC or CMC certificate (around $1,499/yr), the DNS record, and whether inbox logos are worth it.

Hero image for: DMARC p=reject Migration: From Monitoring to Full Enforcement
Deliverability|Jun 29, 2026

DMARC p=reject Migration: From Monitoring to Full Enforcement

A DMARC p=reject migration playbook: climb the none, quarantine, reject ladder safely. Google requires bulk senders to publish at least p=none. Here's the ramp.

Hero image for: How to Recover a Burned Cold Email Domain (Step-by-Step)
Deliverability|Jun 28, 2026

How to Recover a Burned Cold Email Domain (Step-by-Step)

A step-by-step plan to recover a burned cold email domain: stop the bleeding, diagnose, re-warm, and decide whether to rebuild or replace, with Gmail's real reputation thresholds.

Hero image for: How to Switch Cold Email Platforms: Migration Guide
Cold Email|Jun 28, 2026

How to Switch Cold Email Platforms: Migration Guide

Switching cold email platforms doesn't reset your domain reputation. Here's how to migrate mailboxes, sequences, and warmup without dropping live campaigns.

Hero image for: The Complete Guide to Cold Email Outreach in 2026
Cold Email|Jan 27, 2026

The Complete Guide to Cold Email Outreach in 2026

Master cold email outreach in 2026 with our comprehensive guide. Learn proven strategies, legal compliance, tech stack requirements, and real benchmarks to achieve 10%+ reply rates.

Hero image for: How to Avoid Spam Filters in 2026: The Complete Guide to Landing in the Primary Inbox
Deliverability|Jan 25, 2026

How to Avoid Spam Filters in 2026: The Complete Guide to Landing in the Primary Inbox

Master the art of avoiding spam filters in 2026. Learn the technical setup, content optimization, and behavioral patterns that keep your cold emails in the primary inbox.

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