How Sender Reputation Impacts Email Deliverability

The Email Marketing Podcast with Fexingo: Newsletters, Open Rates, and Subscriber Growth · Jul 8, 2026 · 6m · transcript

In Episode 101 of The Email Marketing Podcast, Lucas and Luna explore the hidden driver of email deliverability: sender reputation. They break down how mailbox providers like Gmail and Outlook evaluate senders using spam complaints, bounce rates, and engagement metrics. Lucas shares a concrete case: a mid-sized ecommerce brand that saw a 15 percent open-rate drop after a list-buying mistake, then recovered within 45 days by cleaning their list and warming IPs. The hosts also discuss domain warming, authentication protocols SPF DKIM DMARC, and why a 'clean' list isn't enough…