################################## 
RewriteEngine On 
# Comment out lines by putting a "#" at the beginning 
# Rewriting with a subject - mailto/domain/com/user/subject 
RewriteCond %{REQUEST_URI} ^/mailto/(.*)/(.*)/(.*)/(.*)$ 
RewriteRule ^.* mailto:%3@%1.%2?subject=%4 [R,L] 
# Rewriting without a subject - mailto/domain/com/user 
RewriteCond %{REQUEST_URI} ^/mailto/(.*)/(.*)/(.*)$ 
RewriteRule ^.* mailto:%3@%1.%2 [R] 
################################## 
