The lesson
In the journey builder, open the menu and click Constraint Settings.
A volume constraint caps how many people enter a campaign, as a count or a percentage, per run, hour, day, week, month or year.
A contact strategy caps how often one person or household hears from you, on one channel or all of them. For example, once every two weeks.
Want a second pair of eyes? Tick Manual Approval Stop on a message step. The campaign pauses so you can check a sample, then approve or reject.
Bounces, unsubscribes and do-not-contact preferences are routed out first, on every path. Marketing templates carry their unsubscribe link automatically.