Email size, images, doubts about the background and benefits of the welcome email: these practical tips prevent your campaigns from ending up in spam. Deliverability is a complex problem that is difficult to access without a solid experience. It 's easy to get lost among technical computer skills and knowledge about gamers. Yet even the uninitiated can figure out some actions to put into practice right away. These are very useful to improve the deliverability rate of shipments. Today, we'll cover advice, mythbusters, and actionable advice. A few tips Email size Analyzes have been carried out on the ideal size of emails so as not to affect the delivery rate. However, the results are not so consistent . Here are some studies: V12 states that the total size of emails should not exceed 50-70 KB .
Responsys, on the other hand, is more "forgiving" and recommends not exceeding 125 KB . Perhaps the most reliable study was conducted by Email on Acid. They created a series of 15-650KB HTML emails, testing them against 23 common spam filters. It turned out that emails between 15 and 100 KB get the green light . Delivery issues occur when E-Commerce Photo Editing Service the email exceeds 100 KB. What's even more interesting is when this threshold is exceeded. Whether the email is 100 KB or 600 KB , the number of spam filters triggered remains the same. In fact, seven spam filters blocked a 110 KB email as well as a 650 KB one. Let's name names, as they say: Here's a verdict, which means it's worth pointing out that the 100KB threshold is a must to not lose contacts.
Increase revenue with deliverability Image size Someone might argue, "Whatever the size of the image, what's important is that my email doesn't exceed that 100KB." It is not that simple. Several reports pointed out that images of +20KB are tagged as spam, while those below 50KB safely reach the inbox. Email on Acid has once again tested this. They looked at delivery results when using 16, 84, 146, and 696 KB email images. By the way, the images were hosted on their site to avoid reputation issues IP on other servers. What happened? Image size had no impact on delivery . Indeed, the email/image size ratio is essential. Oversized textless emails trigger spam filters . This is because spammers insert text into their images in an attempt to circumvent the ability of filters to scan and read email content. So what's the advice? Always maintain a text/image ratio of 60/40 to avoid any dispersion of deliverability. spam content An email can become spam for many reasons. Despite this fog, some best practices can help create a message. These instructions keep us out of what filters usually label as spammy content. Never include this in your email: