Is sunlight an effective method for disinfecting objects like letters and packages?
According to the WHO, sunlight does not kill SARS-CoV-2, the virus that causes COVID-19. Exposing your mail to sunlight does not properly disinfect them.
What’s more, exposure to the sun or temperatures higher than 25°C/77°F will not protect you from COVID-19. Even if it is sunny or hot, you can catch COVID-19.