Dear {Applicant},

Thank you for your interest in the {job title} position at {company}. Due to the large number of applications we receive, we will not be able to respond to everyone. If you are selected for an interview, you will hear back from us by {date}.

Kind regards,
{Your Name}

Dear {Recruiter},

It was great connecting with you at {career fair} {earlier today/yesterday}. Thank you for taking the time to speak with me, I learned a lot about {company} and I'm very interested in an opportunity to join such an {exciting/innovative/established} company.

As I mentioned during our discussion, {your experience and skills}, which I'm confident would make me a good fit for the {job title} position.

I have applied for the role on your website as per your instructions. I hope to hear from you soon!

Kind regards,
{Your Name}

Thank you for your submission to {contest organizer}'s {name of contest} contest! This confirms that we have received your entry.

Winners will be {contacted by email/announced on our Facebook page/etc.} on {date}. Good luck!