In this article, we'll look at three key areas for maximising the deliverability of your emails: link size, tracking and source utm, and image weight. By following these tips, you'll increase your chances of reaching your customers effectively and keeping communication flowing.

When including links in your e-mails, it is important to ensure that they are no longer than 130 characters. Spam filters are generally wary of excessively long links, as they can be associated with phishing or spam attempts.

So be sure to use URL shortening services or simplify links where possible.

(Example: https://bitly.com/)

Link tracking is a common practice in e-mail marketing campaigns, but it can also trigger spam filters. The filters may interpret tracking mechanisms as attempts to collect data or undesirable tracking.

To avoid this, it is advisable to minimise the excessive use of trackers and source utm in your e-mails. Use them sparingly and make sure you include them relevantly in your links.

Images can make your signatures attractive, but they can also increase the risk of being filtered as spam if they are too heavy. Spam filters are attentive to the size of messages. Make sure you compress your images appropriately before inserting them in your signatures, ensuring that they are no larger than 500kb.

When you set up your signature with images, be aware that most email clients block images by default. Spam filters analyse the content of your e-mails, including images and associated alt tags, to assess their relevance and legitimacy. By providing concise and relevant alt tags, you help spam filters to understand the content of your email and associate it with your other text elements. This reinforces the credibility of your message and reduces the chances of it being considered spam.

By adding "alt" tags to your images, you help your recipient to know what your images correspond to, even if they are unable to display them.

Keep your signature light,

Don't forget that spam filters are constantly evolving, so it's a good idea to keep up to date with best practice.

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