Quick answer
Choose BloomText when you need to message patients. Slack is built for internal workplace chat, but Slack's HIPAA guidance says covered entities and business associates may not use Slack to communicate with patients, plan members, families, or employers.
The patient messaging issue
Slack isn't the right comparison if the practice needs to message patients. Its HIPAA guidance restricts covered entities and business associates from using Slack to communicate with patients, plan members, families, or employers.
Internal chat vs healthcare messaging
Slack works for internal chat. BloomText is the better fit when the team needs to message patients, staff, and outside organizations.