When you post your email address in your blog to help others to contact you, you dont know that you are also helping bots and spammers to see your e-mail address and sending spam emails.
Spammers have some softwares which searches for email addresses on web,but there is a way to hide it.

Instead of writing your e-mail address directly in post,make it a clickable link and the words will be different to see.

use this code to make a link

You can use your own text instead of E-mail me, like contact us or send me you feedback or anything you like.

Other method is also there to hide your email address from bots is by using images.
if you have photoshop or even you can do this is Ms paint.
just write your email address in paint or photoshop and save it, it will an image so no bots will find it.