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Email Infrastructure
Custom Tracking Domain: What It Is & How To Set It Up Easily Best Email Results in 2025?
Tired of links like trk.mailer.com getting you flagged? Learn how to set up a custom tracking domain to protect your sender reputation and hit the inbox. Pick a subdomain →Go to your DNS provider→Add a CNAME record→Verify in email tool→Test with DNS checker.
.avif)
Email Infrastructure
IPv4 vs IPv6: The Essential Difference Every Sender Should Know to Improve Inboxing
What’s the real difference between IPv4 vs IPv6 for email? Learn how IP version impacts deliverability, reputation, and cold outreach success — plus how to warm up your IP the smart way.
