Participants will be selected based on preset inclusion criteria and will not be considered should they meet even one exclusion criteria as below:

Inclusion Criteria:

1. Receives care from the UMass Chan cardiology or internal medicine clinics and/or services
2. Has an email address on record in the EHR
3. Has a diagnosis of AF or is at high risk of developing AF (CHADS-VASC stroke risk score >2)
4. For phase II, participants will only be included if they participated in phase I and agreed to be contacted about future research.

Exclusion Criteria:

1. Non-English-speaking
2. Unable to provide informed consent
3. Incarcerated patients
4. Patients under the age of 18