How do you say overnight mail in spanish

In Spanish, "overnight mail" can be translated to:

• Correo expreso (this is a common phrase used in many Spanish-speaking countries)
• Correo urgente (this phrase emphasizes the urgency of the delivery)
• Envío urgente (this phrase is more general and can be used for any type of urgent delivery)
• Correo nocturno (this phrase is more literal and means "night mail", but it's not as commonly used as the other options)

In some countries, such as Mexico, you may also hear:

• Correo mismo día (this phrase means "same-day delivery" and is often used for overnight mail services)

It's worth noting that the specific phrase used may vary depending on the country and region you're in, as well as the context in which you're using it.