A/B Test Email Templates Weekly

Automatically run A/B tests on email subject lines and content

Sets up A/B tests in Mailchimp weekly, testing two subject lines or layouts against a control audience. Nora collects results and recommends the winner for next week's campaign.

A/B testing is proven to increase email performance, but most teams don't do it because setup takes time. This automation runs every Wednesday, creating a test campaign within Mailchimp. Nora prepares two subject line variants (aggressive vs. soft call-to-action, for example) and sends both to 25% of an audience segment. The remaining 50% gets the control subject line. After 48 hours, Nora pulls results: which subject line had the highest open rate? The winning variant is automatically recommended for the next full campaign. Over time, this compounds: if winner A gets 5% more opens than control, that's potentially 50-100 extra opens per major campaign. For teams sending 4+ campaigns monthly, this translates to 2-4 hours saved on testing strategy plus measurably better results.

How it works

  1. Pull this week's scheduled campaigns from Mailchimp
  2. Select a control audience segment (minimum 5,000 subscribers)
  3. Create variant A and variant B subject lines (or content layouts)
  4. Set up A/B test via Mailchimp API: 25% variant A, 25% variant B, 50% control
  5. Schedule send for 2 PM same day
  6. Monitor results for 48 hours and pull winner metrics

Frequently asked questions

What does "A/B Test Email Templates Weekly" do?

Sets up A/B tests in Mailchimp weekly, testing two subject lines or layouts against a control audience. Nora collects results and recommends the winner for next week's campaign.

How long does setup take?

Under 5 minutes. Connect your tools and Nora handles the rest.

Which tools does this use?

Uses Mailchimp, run by your Marketing Manager.

How much time does this save?

Saves approximately 4 hours/week, running weekly on wednesday at 9:00 am.

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