DHL is the world's largest logistics company founded in 1969. It provides international express mail services through air, road, rail, and water networks across more than 220 countries. DHL employs over 18,000 mail carriers who deliver packages by bicycle every day. In addition to core courier and parcel services, DHL offers supporting services like consultation, order recording, shipping, tracking, and customer support. DHL has numerous branches worldwide and strives to provide optimized green logistics solutions to minimize environmental impact.