
PostHog’s email promoting their A/B testing tools nails one thing most SaaS emails miss: personality. The little hedgehog kicking back after launching an experiment makes data testing look, well, fun.
This email uses humor and simplicity to turn a technical concept (A/B tests) into something relatable. Instead of listing product specs, it sells the feeling of using the product—ease and relaxation.
Headline plays with curiosity and humor (“A great excuse reason to put your feet up”)
Visual storytelling instantly draws a smile
Focused copy: one message, one call-to-action
Brand voice feels human, not robotic
The “lazy” theme is actually a stealth productivity hook
Notion’s quirky release emails make feature drops feel fun and personal
Slack uses playful illustrations to simplify technical updates
Zapier’s emails highlight “work smarter, not harder” angles with cheerful visuals