OptimizeRx Corporation announced earnings guidance for the fourth quarter and full year of 2021. For the quarter, the company expects record revenue of approximately $16 million, up 117% versus the fourth quarter of 2019, along with positive GAAP net income. The record revenue was primarily driven by strong organic growth in messaging and patient engagement solutions. For the full year, the company expects record revenue of approximately $43 million, up 75% over 2019.