Side by side
FlowCrypt vs Secure Message
Both stand on email encryption software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
FlowCrypt offers encrypted email for individual use and adds domain controls, authentication options and integrations for enterprise. Readers should note the conflicting free-tier attachment details and request commercial pricing directly.
Visit FlowCryptChoose Secure Message if your team wants a self-hosted mail gateway with filtering, quarantine and administrator controls. Professional adds protected-message delivery and outbound rules; Enterprise adds archive search, DLP and other listed features. The yearly paid plans may not suit teams seeking a paid option without an annual bill.
Visit Secure MessageThe facts
| FlowCrypt | Secure Message | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Extension | Linux, Self-hosted, Web |
| Lowest paid plan | Free or on request | Professional: $690 a year |
| Plans published | 2 | 3 |
| Maker | FlowCrypt | Not published |
| Website | flowcrypt.com | secure-message.io |
| On email encryption software | #5 of 31 | #12 of 31 |
FlowCrypt: what it does well
- Encrypted messages can be sent to OpenPGP users.
- Password-protected messages can reach other recipients.
- Recipients can reply securely without installing a plugin.
- Enterprise administrators can enforce security rules.
- Enterprise supports SSO and system integrations.
What to know first
- Enterprise pricing requires contacting FlowCrypt.
- Free plan is limited to fewer than 100 users.
- Free attachment limit details differ: 5 MB threshold and up to 25 MB.
Secure Message: what it does well
- Filters mail before it reaches an existing mail server.
- Community includes spam scoring and SPF, DKIM and DMARC checks.
- Professional portal uses one-time codes without recipient accounts or apps.
- Encryption keys are held on the customer host.
- Audit logs can be exported to CSV.
What to know first
- The appliance runs on Debian 13.
- Professional costs $690 a year.
- Enterprise costs $1,490 a year.
Alternatives to FlowCrypt Alternatives to Secure Message The whole list