The objective of this study is to test the feasibility and preliminary effectiveness of a tailored text message program to support smoking abstinence among postpartum women who smoke or recently quit.

This pilot trial will evaluate a text message intervention (Moms Quit) to be initiated with postpartum women within one month of delivery. Moms Quit is a tailored program to support smoking abstinence among new mothers who are either current smokers or quit during their most recent pregnancy. Investigators will randomize 30 postpartum women, stratified by recent/current smoking status, into Moms Quit versus vs. CONTROL. Investigators hypothesize that participants receiving Moms Quit will have, on average, a significantly longer period of self-reported prolonged abstinence compared to CONTROL.

Inclusion Criteria:

• Less than one month postpartum
• Live delivery
• Smoked at least 100 cigarettes/lifetime
• Smoked anytime during their most recent pregnancy
• English-speaking
• Own a mobile phone
• Provide an email address
• Willing to receive intervention-related texts
• Willing to complete surveys
• Willing to provide a saliva sample at the end of the study

Exclusion Criteria:

• Women whose pregnancy did not result in live birth
• On a 7-point scale, participant indicates that they are not interested in quitting or staying quit in the next 6 months (Not at all = 1).