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About CheckTLS
CheckTLS TestReceiver takes an email address and goes through the steps a mail system uses to deliver a message, recording every command and response, without actually sending an email. It focuses on whether a secure TLS connection can be made to the recipient's server.
The site also has tests for sending servers, mandatory TLS, batch testing, baselines, monitoring, certificate and CSR decoding and an API, several of which are part of paid subscriptions. It suits administrators with compliance needs such as HIPAA or GDPR.
Strengths
- Shows the full SMTP conversation step by step
- Tests TLS without sending a real email
- Extra tools for certificates, monitoring and batch tests
Limitations
- Cluttered interface with many menus
- Advanced features require a subscription
Details
- Pricing
- FreemiumBasic tests are available to visitors; batch, monitoring and other features need a paid subscription.
- License
- Proprietary
- Developer
- CheckTLS
- Platforms
- Web
- How it runs
- Web application, Hosted service
- Account
- Not required
- Works offline
- No
- Best suited for
- Verifying that email to a domain can be delivered over TLS
- Categories
- Security tools, Website testing
- Last verified
- Added
- Provenance
- Selected from the TechWalrus Resource Hub (Website Checkers & Audit Tools); facts checked against the developer's own pages, 2 sources on file.