Intervention	Feedback	Response
MOXIE/Self‐Management Education	Daily email contact was excessive	Email frequency was changed to 2 times per week
	Daily website cards/email were often repetitive	Additional content was created
	Messaging was too focused on medications	New content focused largely on health behaviours and other aspects of self‐management
	Paper‐based mailers were appreciated more than electronic communication	Electronic‐arm participants began receiving weekly mailers, just like paper‐based participants
	Pedometer quality was poor	Added a higher quality pedometer that participants received at the 1‐year mark. This upgraded pedometer was sent to participants as a replacement if their first pedometer broke
	Activity‐based messaging was not relevant to those with physical limitations.	More inclusive/less judgemental language was used in messaging around physical activity
Facilitated Relay	Patients were unclear what they were to do with the letters and why bringing these letters to their providers was important	A note was added to the exterior of the facilitated relay envelope, which provided details on the importance of bringing these letters to physicians and pharmacists
	Patients felt that their providers were not interested in the messages contained in the letter	Changes were made to the letter to highlight the importance for providers
Copayment Elimination	Some relevant cardioprotective medications were not automatically covered (when new additions were made to the formulary)	Procedures were put in place to review the drug formulary and add relevant medications to the study plan as they came onto the formulary
	Patients wished to have self‐monitoring supplies and other medications covered	No changes were made to address this concern
	Some patients were not entirely sure which medications were and were not supposed to be covered	Comprehensive and up‐to‐date medication lists were then sent to all new participants randomized to this intervention
	A small number of patients had problems getting their coverage through their existing plan.	We informed participants that our study team was available to help sorting out this problem, when necessary.