Deliverability and cold outreach notes: what moves inbox placement, reply rates, and sender reputation.
July 3, 2026
Email authentication alone can't stop sophisticated threats. This article explains why reputation and behavior analysis are essential for modern email security and cold outreach success.
Read more →July 2, 2026
A longitudinal study of 1.52 million malicious domains offers surprising insights for cold email senders. Learn how domain reputation, authentication, and list hygiene directly impact inbox placement. As per published article in https://arxiv.org/pdf/2606.11111
Read more →July 2, 2026
Founders are building their own email service providers (ESPs) out of necessity, not ego. With AI tools and cheap sending infrastructure, custom ESPs are becoming as normal as a WordPress site.
Read more →July 2, 2026
Even with perfect authentication, a clean list, and a dedicated IP, emails can still land in spam. The culprit is often a hidden infrastructure issue that standard tools fail to detect.
Read more →July 2, 2026
Enterprise email gateways like Proofpoint and Mimecast can cause valid email addresses to appear as bouncing. Learn how to read raw SMTP responses and avoid misleading bounce reports.
Read more →July 2, 2026
Most email deliverability problems start with the infrastructure underneath your email, not the copy inside it. Learn how to audit your IP reputation and sending setup to land in the inbox.
Read more →July 2, 2026
Most cold emailers focus on SPF, DKIM, and DMARC, but the real culprit behind poor deliverability is often the sending infrastructure. This article explains why IP history matters more than authentication.
Read more →July 2, 2026
Email deliverability is like flying an aircraft: your ESP is the plane, mailbox providers are air traffic control. Focus on what you can control to land in the inbox.
Read more →July 2, 2026
Your email copy and subject line may be perfect, but if your IP reputation is poor, your emails will still land in spam. Learn how to check and improve your sending IP's reputation.
Read more →July 2, 2026
Link-swapping attacks allow malicious content to appear clean at delivery, then redirect to phishing sites hours later. Continuous link monitoring is now essential for ESPs and senders to protect reputation.
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