The Marketing Millennials

What Actually Makes a Good Email with Naomi West, Senior Product Marketing Manager at Customer.io | Ep. 395

Feb 25, 2026
Naomi West, Senior Product Marketing Manager at Customer.io and email marketing expert focused on consent-based automation, testing, and lifecycle strategy. She debunks email myths and why web design often fails in inboxes. Short text emails vs heavy designs, fair A/B testing, event-triggered lifecycle flows, and metrics that actually matter are all discussed.
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ANECDOTE

Text Emails Beat Fancy HTML In A Welcome Series

  • Naomi A/B tested text-based welcome automations against highly designed HTML emails at Parcel.
  • The plain text variant outperformed on click-through and conversion, changing her approach to prefer simple emails for that use case.
ADVICE

Test Entire Automations And Wait A Quarter

  • Run fair tests across full automations and wait for statistical significance before concluding.
  • Naomi tested a three-email welcome series and waited a full quarter to remove seasonality and get healthy sample sizes.
ADVICE

Buy Tests With Time And Conversion Estimates

  • When brand teams resist simple email tests, present the expected value in metrics and time savings.
  • Show reduced design/QA time and projected lifts in CTR or conversions to win approval.
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