Email deliverability isn’t a single metric. There’s no dashboard that tells you exactly why you’re going to spam.
In this episode of The World’s Best Email & Retention Podcast, Jordan sits down with Pierre Pignault, founder of MailSoar and an “email guy’s email guy,” to break down how deliverability actually works in 2026.
From misleading open rates to spam filter behavior, this is a deep dive into how top operators diagnose and fix inbox placement issues.
We get into:
- The 3 signals that actually determine inbox vs spam
- Why high open rates can be a red flag
- How to tell if your emails are really being seen
- The biggest segmentation mistake killing deliverability
- Why deliverability issues show up weeks after they start
- How spam filters actually think (and what they care about)
00:00 Fastest way to drive revenue (email + CRO)
02:20 Why deliverability is impossible to measure directly
08:25 The 3 signals that determine inbox vs spam
17:35 Why high open rates can be fake
23:44 The #1 mistake killing deliverability (segmentation)
29:59 How to fix deliverability in 30 days
33:24 What happens when you send too many emails
Work with Pilothouse: https://www.pilothouse.co/get-in-touch?utm_source=dtc&utm_medium=podcast&utm_content=e&rPodcast
Subscribe on YouTube: https://www.youtube.com/@DTCPodcast
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Listen to DTC Podcast: https://podcasters.spotify.com/pod/show/dtcpodcast
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