Building/Installing:   

1. Edit the Makefile
   1.1. Activate the settings for your system.
        The default is GNU/Linux.
   1.2. (optional)
        Choose whether you want to use GnuTLS/libgcrypt or OpenSSL
        for TLS encryption. The default is OpenSSL.
	Read README.gnutls before using GnuTLS.
   1.3. (optional)
        Choose whether you want to use GnuSASL or built-in code
        for authentication. The default is built-in code.
	Read README.gsasl before using GSASL.

2. Type 'make'. 

3. Copy the executable 'msmtp' to a location you like, for example
   /usr/local/bin.

4. Copy the man page msmtp.1 to a location where the man command can 
   find it, for example /usr/local/man/man1. On some systems, you have
   to gzip the file first.

5. Create $HOME/.msmtprc (see the man page or msmtprc.example).
