Related to email protocols, clients, servers, content, and message format.

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6
votes
4answers
275 views

Circumventing a “freemail” account form filter

I'll be honest - I want to download a free PDF from a website which requires me to enter my "non freeware" email address. I do have them, but I dont want to use one as I'm afraid of landing up on a ...
6
votes
3answers
1k views

PHP mail() Header Injection Prevention

This site nicely explains the problem. Essentially, nearly all php mail() examples that are given are vulnerable to header injection attacks. The referenced site gives a regex sanitation solution ...
13
votes
11answers
1k views

For users that does not use PGP, what would be the other channel to securely send them a document?

I would like to send a document that is confidential to users that have no clue what PGP is (so no point in teaching them how to install it etc...) via email. The real question is how to do that? ...
18
votes
4answers
1k views

What type of content better not to transfer by email?

Email is one of the main tools of business communication. On the other hand, it is not a secure way of communication. But to what extent it is not secure? I have always wondered how sensible it is ...