Reply to email

[synox]

Sometimes it is necessary to reply to an email in the mailbox. The function should be as simple as possible.

Requirements:

• Use built-in mail function http://php.net/manual/en/function.mail.php
• From, To and Subject can not be changed by the user (don't trust user input)
• To limit abuse: For each message, only one reply is allowed.
• The feature has to be explicitly enabled by the user (disabled by default).
• As few lines of code as possible, while keeping it simple.

Challenges:

• Where to persist that a message has replied to? So far the application is stateless. Hint: The Flag-Feature of imap could be used.

[synox]

maybe #49 gives some clues.

[joshp23]

You could check the state by scanning the catch-all's sent folder for anything sent from that user name. You would have to make sure that the catch-all is configured to send as any user name.