Hey everybody I am new and I got some work of relevant backlink.
But I don't know how to get relevant backlink on the site. I only know email the website's owner. But can't reaply our emails.
So do you guys have some nice idea and any other types then please post here.

Welcome your ideas.

just search on google for your relevant keyword.and check back links of your competitor.if u dont know how to check than write like this
link:http://www.....

and start sending mails to sites listed in that list.

Jignesh I am already done this. I am searching my competitor and email them But they can't reply my emails. And some them reply my emails but they give me bed words in email and some are not interested. So I am finding some new ideas.
If you have any other idea or any body has then please post here.