A popup or a custom field added to an existing popup, to capture SMS subscribers. To be most effective, popups should offer visitors an incentive for signing up. SMS subscribers are automatically added to a list when they opt-in. Typically a popup is paired with a flow that fulfills whatever incentive was offered in the popup
Recover purchases where the customer left their number in the checkout but did not order. The three SMS variation sends an initial reminder as the first SMS, before offering a time-sensitive discount coupon to use on the purchase in the second SMS. There is one follow-up SMS when the initial coupon send to remind the customer to use it before it expires. The flow automatically removes any customers that make a purchase during the SMS sequence to avoid excess SMS fatigue.