Today I am sharing a Tip that can be used to redirect one share-point site url to other.
First create text file with below content
<meta http-equiv="Refresh" content="5; url=Site url">
Note:– Url is the site page url to which you want to redirect.
Now upload this text file in document library of the site from which you want redirection to happen.
Now add a content editor webpart & add url link to the file that you uploaded above to document library.
Its done now , page will auto redirect to new page. (you can also add content to the source page that this site has been redirected to new site & add the link as well)