Email remains the highest-ROI marketing channel at $42 for every $1 spent. AI is making email marketing significantly more effective. Here is what is working.
AI for Subject Line Optimisation
Phrasee - Generates and tests email subject lines using a language model trained specifically on email performance data. Consistently improves open rates by 10-20%.
Copy.ai - Generate 10 subject line variations in seconds. A/B test the top two. This alone can lift open rates meaningfully.
AI for Send-Time Optimisation
Klaviyo AI - Predicts the optimal send time for each individual subscriber based on their historical engagement. Particularly effective for e-commerce brands with large lists.
AI for Personalisation at Scale
Connect your CRM data to ChatGPT via Zapier. For each subscriber segment, generate personalised email body copy that references their specific behaviour (last purchase, product viewed, signup source).
AI for Sequence Writing
Use Jasper AI email templates to write a complete 7-email welcome sequence in an afternoon. Without AI, this typically takes 2-3 days of copywriting time.
Recommended Stack
- Platform: Klaviyo (e-commerce) or ActiveCampaign (B2B)
- Copy: Jasper AI or Copy.ai
- Subject lines: Phrasee or manual A/B testing via ChatGPT
