If your email goes to SPAM then possible issues will be.

1- You are not using domain name email for sending email.

Please create a domain email like [email protected] and then come to

WordPress Dashboard --> Settings --> General --> Here you will see Email Address Option . Please change this to domain name email.

Then come to WordPress Dashboard --> Classiera Options --> Contact Page --> Also change email from here.

Then test email, Your problem will be solved. If not then read point number 2.

2- Your are using cheap hosting, And your hosting name server is marked  by Google.

If your issue is hosting then you must need to contact with hosting support to solved this issue.