Virality occurs when one user introduces your product to others, while network effects mean the product becomes more valuable as more users join. Successful consumer companies leverage both to grow their user base organically.

Virality can be analyzed through three factors: payload (how many people you can reach), frequency (how often you reach them), and conversion rate (how many take action).

To achieve virality, your product must inherently encourage sharing from day one, rather than treating sharing as an afterthought.

The secret to virality is that there is no such thing as a truly viral product. It's about word of mouth, where one user spontaneously tells another about your product, which has shaped much of what we do at Superhuman.

Creating internal virality within a company can help align teams and generate excitement about new products.

Viral growth requires not just a good product but also an excellent user experience that encourages users to share it with others. A strong referral program is essential for facilitating this growth.

If your product is social in nature, having more users improves the experience, making it essential to focus on virality and referrals.

Creating viral content is a teachable skill; with the right knowledge, anyone can learn to produce videos that attract millions of views.

The virality of a product can be assessed by its conversion rates at each step of the user journey, from invites to sign-ups.