There are so many contact us form providers on the Internet, one is from Foxyform.com
Contact form provided by Foxyform.com is easy to set, easy to use and have the spam protection.
Below is the sample figure of contact form provided by foxyform.com
When someone write and send the message, the message will be sent to your email address.
You can see the sample of contact us form in my other blog
To create an account go to foxyform.com, then set your form , your email, and your color of form.
click on figure for enlarge
Click on Fomular then you will be given a script to put in your blog.
To put the Contact form in Blogger(blogspot) page, first you have to create new page (not new post)
With a title name : Contact Us or the words you want
Click HTML (as show in figure)
Paste the script to the post body, then click Publish
The Contact us form page is already created.
To open Contact us page you need a word/text, or picture and linked to that page
Go to layout
Add New Gadget
Choose Text (link with text, choose image if linked using image)
Fill with text : Contact us, highlight and click on the link icon, then paste the url/address of the above page
You can see the sample on this page