| Price from | $5/mo | $5/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 5 | 3 |
| Spec score · Task Management Software | 9.2 (#5) | 8.2 (#30) |
| Intended users | The maker describes Flow-e as an email client for managers and small business owners. | The maker identifies freelancers, small teams, agencies, law firms, medical practices, students, and organizations handling sensitive data as intended users. |
| Product | Flow-e is a Kanban-like visualization layer on an Outlook inbox that turns it into a visual task board. | Stacks describes itself as an all-in-one work and project management tool for managing projects, tasks, and communication. |
| Security controls | The data-processing agreement describes encryption, firewalls, access controls, logging, backups, least-privilege access and multifactor protection for remote access. | Managers and admins can control who views or edits projects, columns, and tasks, and assign users different access levels. |
| Support | The desktop page directs users to email [email protected] for feedback or bug reports about the beta app. | The maker offers documentation, FAQs, a contact form, a Discord community, and GitHub discussions for support. |