From: "PEAR Announce" on
The new PEAR package Mail-1.2.0b3 (beta) has been released at

Release notes
QA Release. Bug #16200 - Security hole allow to read/write Arbitrary File

Package Info
PEAR's Mail package defines an interface for implementing mailers under the PEAR hierarchy. It also provides supporting functions useful to multiple mailer backends. Currently supported backends include: PHP's native mail() function, sendmail, and SMTP. This package also provides a RFC822 email address list validation utility class.

Related Links
Package home:

Chuck Hagenbuch (lead)
Richard Heyes (developer)