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Join us: reduce your digital carbon footprint by ditching email signature images

Opinion
Join blooloop ditching images on email signatures to reduce digital carbon

Adding images to your email signature can increase size by 5x!

Join Blooloop in getting rid of images in email signatures. Let’s see how much carbon we can save by taking this small action together.

Weighing up emails

A standard email without an attachment has a carbon footprint of 4gm of CO2e (carbon dioxide equivalent). This is the result of the power that data centres and your computer spends sending, filtering and reading your messages. Adding an email attachment of 1MB increases the footprint of an email by 15gm CO2e, almost a 5x increase.

At Blooloop we have stopped adding images to our signatures and instead included a statement about why we’re doing this and replaced social media icons with text links.

If you’d like to join us in this small action then please email Ruth (ruth.read@blooloop.com) and we’ll send you some information about how to calculate the overall impact for your organisation, an example of email footer text and some more info about reducing the carbon footprint of your emails. We need to know how many emails you send a week and how big the image on your signature is in kb.

Even though the absolute footprint per email is small, just think how big the impact could be for an organisation … or sector if we stop adding images to our signatures.

We will add up all the commitments to see how much of a difference we can make together and report back at greenloop 2024!

Find out more

We (Blooloop) have been working on our digital carbon footprint for the past year, trying to measure it as a first step and now looking for ways to reduce it. Because information about digital carbon is quite hard to access, we thought we would share some top tips, starting with emails.

You can find out more by watching our session at greenloop sustainability in visitor attractions conference below, where we talk about signature images and other ways to reduce the carbon footprint of emails:

You can watch all the greenloop sessions on demand for just £24.

[greenloop attendees: you will receive a code to access the sessions for free once the demand platform is no longer live.]

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