Release Notes: In some cases bare LF's were still getting sent; this should be fixed now. Bare period encoding has been fixed (it wasn't working right in some rare cases). HTML detection has changed to require the "html" tag to be at the beginning of a line. Otherwise any email with this tag in the message would get sent as an HTML message.
Release Notes: This release fixes password authentication bugs that have plagued many users. It has better detection of HTML messages, and a new command line option for forcing the message to be sent as plain text or HTML.
Release Notes: A new command line option to specify a local bind address. EHLO should never send "localhost" now. A small change to how the time zone is sent. The Windows executable now has TLS support enabled.
Release Notes: TLS support is now included. To enable it, simply install the Perl Net::SSleay and IO::Socket::SSL modules. The "-o message-header" option may now be used more than once, and may now be used to override automatically generated email headers. Authentication code now supports the SASL PLAIN mechanism. An annoying bug that made some MUAs believe there was always an attachment when there wasn't has been fixed. A new base64_encode() function fixes a bug that was causing certain usernames/passwords used with -xu and -xp to not work properly.
Release Notes: A bug that prevented 1.51 from working properly on Windows and Mac systems has been fixed. Null command line arguments are allowed again. Shell escape codes are printed for colored help on everything but Windows. The default MIME-encoding header has been changed to "application/octet-stream" rather than "base64" when it can't guess any other content-type to use. A -o message-charset option has been added to specify the message body's character set.
Release Notes: A few alarm() calls causing issues on Win32 systems were fixed. An -o message-format=raw option was added to allow sending of raw pre-built email messages. A new method of detecting the hostname was added.