This content was published by Andrew Tomazos and written by several hundred members of the former Internet Knowledge Base project.

Intermediate Servers

It would be technically possible to get the email address (and password) out of the IP traffic, because email is sent in the clear. You would need to have control of an intermediate server between the correspondants.

Segmail is no worse or no better than the current system in this regard.

A layer of encryption needs to be added to SMTP like HTTPS vs HTTP.

This is a seperate problem and not addressed by the design of Segmail.

The username on an email address cannot contain an @ character. It is not well-defined what it can contain, but definately alphanumeric and -. (I've seen %, _ and a bunch of other things too)

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