Email AuthenticationBIMI lets you display your brand logo next to emails in the inbox. Learn what authentication requirements you need, how to set up the DNS record and SVG logo, and which inbox providers support it.
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Email AuthenticationSPF enforces a hard cap of 10 DNS lookups. Exceed it and your record returns a permerror that breaks authentication for every mail you send. Here's how to diagnose and fix it.
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Email AuthenticationDKIM keys should be rotated regularly, but doing it wrong can break authentication for messages already in flight. This step-by-step guide shows how to rotate selectors safely.
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DeliverabilityA new dedicated IP starts with zero sender reputation. This practical warming guide gives you a week-by-week volume schedule, engagement sequencing tips, and the warning signs that mean you need to slow down.
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Cold EmailCold email campaigns carry inherent reputation risk. This guide covers how to build dedicated infrastructure—separate domains, proper authentication, and warming—so a bad campaign never touches your main domain.
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SMTP & InfrastructureChoosing the wrong SMTP port can mean unencrypted connections, silent ISP blocks, or refused submissions. This guide explains ports 25, 465, 587, and 2525—what each does and when to use it.
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SMTP & InfrastructurePassword resets and order confirmations that land in spam erode user trust fast. These transactional email best practices cover infrastructure separation, authentication, From address hygiene, and monitoring.
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SMTP & InfrastructureA missing PTR record triggers Outlook to reject your mail with a 550 error. This guide explains what reverse DNS is, why mailbox providers check it, and how to configure forward-confirmed reverse DNS for your sending IP.
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Email SecurityCAN-SPAM, GDPR, and CASL govern commercial email in the U.S., EU, and Canada respectively—and they have very different consent requirements. Here's what each law demands and how to stay compliant with all three.
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