Need this help urgently. Please tell me how to do this: When somebody subscribes to my post, they get an email each time I post on my blog. In that mail they see the complete post. Now I want that only in the mail, they should be able to see only some portion of the post and for the rest of it, there is a "read more" button which directs the user to my website.

Please tell me how to do this.

Thanks in Advance.