Email Loops That Bring Viral Lab Users Back
Email is still underrated for AI labs. Here is the lifecycle playbook we use when creators opt in for credit receipts.
1. Receipt emails double as onboarding
When someone buys credits (or soon, when our new checkout launches) the receipt email includes links to Emotional Damage Meter, Flirt Spark, and Attractiveness Aura. It also reminds them that five free credits reset daily. This turns a transactional message into a tutorial.
2. Highlight reels on Sundays
Every Sunday we send a Lab Dispatch" newsletter featuring three standout screenshots, two creator duets, and one new prompt template. The CTA is always Generate your own" with direct lab links. We see a 24% lift in runs on newsletter days.
3. Triggered reminders
- 48-hour lull: If a `client_id` has not run a lab within 48 hours we send a simple note: Your credits reset in 4 hours burn them on Toxic Score?"
- Share hero: When someone hits the +9 share cap we send a congrats email with a discount on the next paid pack.
4. Segment creators separately
Creators who register for early access get a different cadence: launch updates, sponsor opportunities, and new ShareCopy entries. This keeps the signal high and prevents regular users from feeling spammed.
5. Plug back into Discord
Every email footer invites readers to join our Discord. Email is the hook; Discord is the hangout. Combining both keeps retention high.
6. Automate recap digests
Once a month we send a recap of new labs, creator collabs, and top blog posts. The digest also highlights upcoming roadmap items so readers feel part of the build process.
7. Optimize subject lines with experiments
We run A/B tests on 10% of the list. Winners are determined by 6-hour open rate, after which the winning subject sends to the remaining subscribers. Emojis rarely win; specificity does ( New duo lab: Couple Toxic gets an upgrade\").
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