An Auckland real estate agent accused of posting pooh to a rival agent has pleaded not guilty.

Freemans Bay resident Grant Campbell Tucker was accused of posting an article containing faeces "without reasonable excuse'' on March 6.

Tucker, 57, faced a second charge of using obscene language over the phone to intentionally offend Jonathan Wills on February 16.

He entered two not guilty pleas at Auckland District Court this morning and was remanded on bail for a case review in August.