Your email never arrived. The server responded with 554 5.0.0, and that was it. No explanation. Just a permanent bounce. The real problem with this error: it’s intentionally vague. It…
Several protocols are used to manage the sending and receiving of emails. These protocols, though often invisible to end users, play a major role in the proper functioning of electronic…
You chose your email service because it was the one at the office. Or because the IT Director decided it ten years ago. But have you considered the real cost…
Wondering why Gmail sometimes truncates your email messages, thus hiding the content with a “Message Clipped” and “View entire message”? An unpleasant technique that prevents recipients from seeing the entire…
Transactional email is one of the important points of the email marketing strategy. It not only makes it easier to reach recipients than with a promotional message, but also helps…
Between 20% and 50% of an email database’s contacts are inactive at any given time. These addresses don’t just weigh down your statistics: they actively harm your sender reputation. Since…
Because current consumers mainly have their phone always at hand, SMS marketing has become essential. The high engagement rate, the increase in brand awareness and sales are among the many…
We were talking to you a few weeks ago about SMS Marketing and its many advantages for the company that adds it to its communication channels. But in order to…
CaptainVerify verified over 126 million email addresses in 2025. Only 57% were valid. On a list of 100,000 contacts, 43,000 can’t receive any message, yet most companies send them campaigns…
A bounce is a bit like a package returned to the sender: the message did not reach its recipient for some reason. However, where a simple address error can be…
Because deliverability is essential in an emailing marketing campaign, it is essential to use all the tools and techniques available to you to make your emails arrive well in the…
Technology evolves every day, as well as public preferences. One thing is safe, it is today the prime customization. In a context where marketing tools are more and more numerous…
A phishing email arrives. The recipient address displays free-achats@votredomaine.com. You immediately know what happened: Free sold or lost your data. No need to investigate further. This is what a correctly…
In this blog, we often talk to you about emailing without having clearly explained what it is. That is precisely the goal of this article: to go back to basics…
It is well known that a company’s reputation is crucial. But what about its online reputation, or more specifically, its reputation as an email sender? If a significant part of…
A password reset email is sent out. It never arrives. No error message on the sender’s side, no bounce, no alert in your sending tool. Just silence. In some cases,…
Deliverability is crucial. As email marketing experts, you know that all your efforts to create engaging and attractive campaigns can be nullified if your emails do not make it to…
You have refined the object, content and design of your email, your list is ready, but did you think of the Pre-Header? Often forgotten or wrongly neglected, the header of…
$2.77 billion. That’s what the FBI reported as losses due to Business Email Compromise in 2024 alone, according to the annual IC3 report. A fraction of these attacks succeeded even…
Conversational SMS is emerging as an essential tool for businesses. Conversational SMS goes far beyond the simple text message as it allows real-time, two-way interaction between brands and their customers.…
In a list of subscribers, there are always a number of inactive contacts. Indeed, once registered, some people will stop opening the communications you send them for X or Y…
For email marketing experts, the quality of leads is crucial, as it ensures the success of their campaigns. Indeed, bad leads, or low-quality prospects, can not only harm conversion rates…
An unknown email address lands in your inbox. A prospect fills out your contact form, providing only their email address. A fraud signal is triggered during an online payment. In…
There are many details to check and refine to maximize the chances of your emailing campaign even before it is sent. Among these, today we will talk to you about…
Before landing in the inbox, an email goes through several treatments that will make it possible to define if it is legitimate or not. Among these steps and processes, we…
The desktop versions of Outlook (2007-2019) utilize the Microsoft Word rendering engine to display HTML emails, which drastically limits support for modern web standards and creates recurring display issues. This…
What’s the difference between Cc and Bcc? Cc (Carbon Copy) adds visible recipients: every recipient sees who else got the message. Bcc (Blind Carbon Copy) adds hidden recipients: each Bcc…
With the arrival of the iOS 15 update in September 2021, Apple once again proved its desire to prioritize the confidentiality of the data of its users. The brand has…
A CNAME (Canonical Name) record is a type of DNS entry that points a domain name to another domain instead of an IP address. For email marketing professionals, mastering CNAME…
Although the sending of professional SMS is still unclear compared to other communication tools, it is very promising. Indeed, recent studies have shown that the vast majority of consumers prefer…
One of the essential factors to ensure the success of your email sending operations is choosing the right port for your emails. In this article, we will explore the main…
The Obiz© Group is a leading player in relational marketing, renowned for its innovative and responsible approach. For its B2B clients, the company designs and manages affinity programs and customized…
And if you were told that there was a legal, inexpensive and more or less easy way to get key information on a subject? This is what OSINT allows, a…
The SMTP 550 5.7.1 error is a response code from the Simple Mail Transfer Protocol (SMTP), indicating a permanent access denial by the recipient’s server. This Non-Delivery Report shows that…
The main purpose of any respecting web marketing campaign is to reach the recipient inbox. A journey shot, and especially monitored by organizations responsible for evaluating your reputation as sender.…
If you observe the good practices of emailing, your shipment should arrive in the recipient’s box. However, despite the best will of the world, it happens that your email, as…
Faced with the rise of mobile messaging, companies must choose between the universal simplicity of SMS and the enhanced interactivity of WhatsApp. In a context where customer relationships demand personalization…
A hard bounce is a permanent rejection of an email: the address doesn’t exist or the domain is invalid, and delivery will fail every time. A soft bounce is a…
Structuring an email strategy means combining operational efficiency with quality interactions. Email templates allow for automation while maintaining personalization, turning each customer interaction into a conversion opportunity. Let’s explore how…
Emailing is a very common marketing strategy, redoutably efficient and useful for building a long-term relationship with prospects as customers. CAUTION However, it’s a double-edged weapon that, if it’s badly…
Creating effective professional newsletters without depending on a developer or designer has become accessible to everyone thanks to email builders. These solutions are transforming how businesses design, personalize, and send…
Have you ever heard of the RCS? Considered as the SMS of the future, this evolution of text messaging offers not only an incredible interactivity, but also interesting features, thus…
Email copywriting is not just about writing texts; it is the driving force behind Customer Lifetime Value (CLV). In an ecosystem where attention is a scarce resource, optimizing your email…
Email is a great way for a site to establish contact with its visitors and acquire new subscribers. Among the different existing tools, the mailto link is efficient and easy…
Once is not customary, we speak to you here about email deliverability! A little-known but powerful tool to optimize this deliverability is Microsoft Smart Network Data Services (SNDS). If you…
As the light dims, activating dark mode becomes second nature on our screens. Dark mode has permeated our digital habits and is also changing the way emails are designed and…
Classic scenario: you’re checking your emails, and one catches your eye because you don’t recognize the sender. You then wonder whether it’s spam or an important email. How can you…
We repeated many times, the secret of a good emailing campaign is to send the right message at the right time. But what is this good time, this perfect timing…
In the face of inbox saturation, standing out with emails that quickly capture attention has become a real challenge. More than just a question of content, the structure of an…
Sometimes a single image makes it possible to translate many words. Animated gifs are part of our daily life and are now immisculated in the professional setting. The integration of…
When a recipient marks your email as spam, it remains one of the most dreaded actions in digital marketing. Yet, behind this simple click lies a ruthless barometer: the complaint…
Whatever the quality of your newsletters, you will always have a certain rate of unsubscribe to mailing lists, there is nothing to do against that. On the other hand, you…