Adjacent-product onboarding email loop
Use your main product's onboarding emails to introduce one adjacent tool or feature that solves a near-term follow-on job for new users.
Why this can grow a startup
New users are already opening your onboarding emails to understand the product they just signed up for. That makes the sequence one of the cheapest high-attention surfaces you own. If the adjacent product is genuinely useful in the same workflow, the email becomes more than a cross-sell. It turns activation in product A into discovery for product B without buying another audience.
Company example
Buffer noticed that only about 10% of new users were creating Start Pages, so it added Start Page promotion into the main Buffer onboarding sequence. The onboarding emails alone doubled traffic to the Start Page landing page from January to March, and Buffer later reported that 73% of new Start Pages were created by new Buffer users.
Source and metric
Source: Buffer Open Blog · Browse Buffer Open Blog tactics
Onboarding email tweak doubled Start Page landing-page traffic; 73% of new Start Pages later came from new Buffer users
Source discovered: May 24, 2026
When to use it
Use this when Email, Lifecycle, Product is relevant to activation, cross-sell, retention and you can run a bounded test with a free budget.
When not to use it
Do not use it as a substitute for customer evidence, a clear owner, or a measurable stop condition. Local platform rules and market behavior still need checking.
Founder checklist
- Read Buffer Open Blog and identify what is directly supported.
- Choose one channel context: Email, Lifecycle, Product.
- Define the test around Onboarding email tweak doubled Start Page landing-page traffic; 73% of new Start Pages later came from new Buffer users.
- Set an owner, evidence window, and stop condition before launch.
Explore the context
Apply this with an operator
Connect activation, customer value, retention, and referral into one measurable loop.