New feature: measure every KB emitted by your signatures to optimize them

Trop d’images, de mauvais formats, un hébergement non maîtrisé… Résultat : elle surcharge vos serveurs, ralentit l’ouverture des messages et ajoute, pixel après pixel, des grammes de CO₂ à chaque envoi.

Letsignit already allows you to harmonize your team members' email signatures and turn them into a genuine communication asset. But beyond the numerous features that make your messages shine and amplify your brand image, we wanted to go further: make each signature as high-performing as it is responsible.

Until now, our solution already optimized the weight of your signatures and campaigns. Today, it also allows you to visualize their carbon footprint in real-time and reduce it. Signatures, banners, campaigns: each element is measured, analyzed, optimized.

A true win-win: your brand gains consistency, the planet gains lightness.

Why signature weight matters (really)

An unoptimized email signature adds an average of 1.2g of CO₂ per email¹. Over a year, a salesperson who sends 36 messages per day generates 11 kg of emissions... just with their signature. With a compressed signature hosted via Letsignit (≈ 120 KB), this same sending drops to 0.12g; the salesperson's annual footprint then falls below 1 kg of CO₂.

Multiply the difference by the entire team: the gain quickly becomes massive, even though many organizations aren't aware of it.

Real-time visualization: your new ally in the Letsignit designer

With each modification (signature, campaign, or combo), a dynamic counter updates:

• An instant display of the total weight in KB
• A progress bar that adjusts according to our best practices:

Our feature scrutinizes each block: dimensions, format, hosting, text, and, through our FAQ, offers simple recommendations to reduce the weight of your signatures if you wish: compression, resizing, hosting choices... all while preserving the sharpness of your creations and their performance.

Keep in mind for an optimized signature:

1. For a signature: 200 KB
2. For a campaign: 300 KB
3. For the whole: 500 KB

Centralize to better control

Let's be honest: from an environmental perspective, the best email signature remains... no signature at all.

But in organizational reality, email signatures address concrete challenges of recognition, legitimacy, brand consistency, and IT centralization. They are a reference point in millions of daily exchanges.

So rather than letting each employee cobble together their own with heavy images, uncontrolled hosting, and all the problems we know about, it's possible to regain control in a more responsible way.

This is where solutions like Letsignit can play a useful role. Not only by facilitating signature centralization and compliance, but also, progressively, by guiding companies toward greater digital sobriety: by measuring, optimizing, and raising awareness.

¹ Source: Woola – Email signature emissions
‍² Source: Cleanfox - L'empreinte carbone de vos newsletters