No_intervention: Control Phase: For capturing baseline parameters.

In the control phase, baseline data including postpartum BP measurement, treatment at enrollment and BP at 6- and 12-weeks follow-up will be recorded. BP control rates, and clinical outcomes will also be recorded.

Experimental: Intervention Phase: Participants will crossover to the intervention phase after 12 months.

After a period of 12 months when all sites are in the control phase, crossover into the intervention phase will begin. The multilevel intervention will be the HDP Implementation Bundle. Patient education will be provided at time of participants' enrollment. This will cover knowledge of normal BP parameters, complications of HDP, warning symptoms, and advice on appropriate measures to take. A free automated BP monitor (e.g., Omron Series 3) will be provided and patients will be trained on BP measurement and instructed to report daily BP recordings via text messaging (similar to our feasibility study). Additionally, there will be a standardized follow-up interval (determined by Aim 1 results) for all patients with HDP and provision of free antihypertensive medications, if needed.