DELIVERABILITY
DNS & IP
GENERATORS
Practical guides on verification, deliverability, and email authentication — from the team building the tools.
DeliverabilityEvery email you send triggers an MX record lookup. Understand what MX records do, why priority matters, and how a broken record cascades into hard bounces and damaged sender reputation.
DeliverabilityThe senders with the lowest bounce rates aren't cleaning harder after the fact — they're verifying before every send. Here's how to build a workflow that keeps bounces below 2% on every campaign.
DeliverabilityAuthentication proves who sent a message—but says nothing about whether your list is real. Here's how SPF, DKIM, and DMARC actually work together, and why list verification is the step most guides ski
DeliverabilityYour campaign says 98% delivered. That doesn't mean 98% landed in inboxes. Deliverability and delivery are different metrics, and the gap between them is where sender reputation dies. Here's how to fi
DeliverabilityYour open rates dropped 35% in six weeks. Before you hire a $5,000 consultant, run a free verification. Most deliverability problems trace back to list hygiene—and a 20-minute check surfaces that inst
DeliverabilityAn SPF record generator is a starting point, not a destination. The real work is staying under the 10-lookup limit and ensuring your SPF pass satisfies DMARC — two things most tools skip.
DeliverabilityInbox providers stopped warning senders in 2025. They started rejecting them. Here's what changed, what the fines signal, and why a dirty list is now a compliance risk.
