It's in French. Here is a translation to help you understand :

This environmental impact is with the configuration shown in the picture :

• 50 mails/week from a pc, each with 1mb attachments
• 7 hours of 4k streaming (YouTube, Netflix, or whatever).
• 3 hours of HD video calls.

All through wifi.

In the impact and comparison below, you should be able to understand from the emojis :

The impact equates to

• 153km in a car, 5 t-shirts, 4.6 meals with beef.

The list under that is the calculated environmental impact : (1y, is with the amount per week, so one year in weeks).

• 1y email
• 1y video call
• 1y streaming
• 1 smartphone
• 1 touch pad
• 1 laptop
• 1 TV
• 1 PC

Source : https://impactco2.fr/usagenumerique You can play on the website to find your impact.

The website is from the French government, and created with the help of the ARCEP and ADEME through extensive studies https://www.arcep.fr/la-regulation/grands-dossiers-thematiques-transverses/lempreinte-environnementale-du-numerique.html

So next time when you get a proposition to clean your emails, think about this. The emails are dwarfed by everything else.