With email marketing, you can easily and quickly reach target markets without the need for large quantities of print space, television or radio time or high production costs.
Email Marketing is direct marketing concept in which B2B and B2C both are included. Email marketing occurs when a company sends a commercial message to a group of people by use of electronic email. Most commonly through advertisements, requests for business, or sales or donation solicitation...
I think, you must be go with the facebook ad campaign because today, its too much cheap to start any of the promotion on FB. So as my opinion, The best part is Facebook Advert.
Long Tail keywords are more than two keywords in which we can also use the phrase keywords of target keywords. Search Engine also count the long tail keywords while crawling the website or Blog.