Invitations & Wedding Websites
Photo from Wedding Mapper
If you have a wedding website, then you should tell your guests about it when you send them an invitation to your wedding.
At the bottom of the invitation, add a line that says "For more details, please visit our website at http://www.(thenameofyoursite).com/."
Keep in mind that some of your guests may not have access to the internet, so be sure to include directions with the invitation even if they are on your website.