A good wellness list should respect attention. That means clear expectations before signup and messages that feel useful when they arrive.
Email works well for longer reads, seasonal checklists, product education, and article roundups. SMS should be used more sparingly because it reaches people in a more personal channel.
Consent should be specific. Readers should know whether they are joining email, SMS, or both. SMS consent should not be bundled invisibly into a general signup.
Leaving should be simple. Email needs a working unsubscribe link, and SMS should honor ordinary opt-out words like STOP.
When a publication treats signup as a relationship instead of a trapdoor, readers are more likely to stay because the exchange is clear.