Dear Hiring Manager,
Referring the job ad for the post mentioned in the email subject, I hereby apply for this post.
As far as my career profile is concerned, I have been practicing digital marketing for last 05 years. Moreover, if I may get a chance to work with you, I can get you qualified leads from the search engines like Google & Bing and from social media channels like Facebook, Google+, Twitter, Instagram, LinkedIn and much more.
Sir, I believe that I have knowledge and skills which can be very beneficial for your organization.
For further details, please review my LinkedIn profile.