STARTTLS for Email Encryption
STARTTLS is set using your MTA (e.g. Postfix). If you use a third party email service provider, ask them to do it. It costs nothing.
Notes
- There is no guarantee that the email sender will use encryption.
- However, STARTTLS usually works!
How to measure success?
You can use the excellent tool at Internet.nl from the Dutch Govt. or similar tools.
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