Greenvelope is considered a legitimate service. It has received numerous positive reviews from customers, indicating satisfaction with their business interactions and dealings. The website has a high trust rating and is considered safe for consumers to access. Users have praised the site for its ease of use, efficient tracking system, and creative design templates. Therefore, it's safe to consider purchases or engagements with the business. However, as with any online service, it's always a good idea to do your own research and ensure the site meets your specific needs and standards.