Trouble sending communications to German ISPs and Webmails?

For several years now, German ISPs and webmails have been tightening their policies towards the advertisers targeting German recipients. Recently, you might have noticed that German ISPs have rejected part of your email stream pointing out a generic PTR as the reason of rejection. In order to improve your chances to deliver communications to German… Read More »

Microsoft O365 Bulk Complaint Level

When targeting Office365 hosted mailboxes, Microsoft assigns a Bulk Complaint Level to incoming messages originating from bulk mailers.The BCL rating is being assigned the same way the Spam Confidence Level (SCL) through an appended X-header. A high BCL level indicates the related message is likely to be spam.To determine the BCL level, Microsoft uses both… Read More »

Spam traps

What is a spam trap? Spam traps are mailboxes either created for the sole purpose of identifying spammers, purchased list users, list harvesters or they are abandoned mailboxes belonging to real individuals. Types of spam traps? There are two type of spam traps: Pristine spam traps which are created by ISPs, webmails and even blacklists… Read More »

SFR bounce codes explained

In France ISPs mailboxes still represents a large chunk of the targeted B-to-C segment. Today, we are taking about one the largest french ISP named as SFR.The largest french ISPs are known to be using the filtering systems from Vade Secure. In this post we’ll look at the GU_EIB bounce codes and their meaning. The… Read More »

Email authentication

Authentication is considered as an important mechanism for your e-mail program. ISPs and webmails have been tightening their filtering rules over the years in order to protect their users from spam and phishing. In order ensure an optimal deliverability/delivery of your communications, you should implement the most common authentication mechanism available: Sender Policy Framework (SPF)… Read More »

More marketers wants to send communications through TLS

Across the last couple of months I have seen more and more marketers asking for the possibility to send out their communications through a secured end-to-end encrypted connection. A while ago, Gmail started to promote TLS (Transport Layer Security) encryption for marketers sending communications towards individuals using their services. While, the fact of not sending… Read More »

Data Protection Officer, are you allowed to manage a team?

With the arrival of GDPR regulation, any organization processing personal needs to appoint a Data Protection Office. GDPR regulation states that you must appoint a Data Protection Officer (DPO) if: You are a public authority or body (except for courts acting in their judicial capacity); Your core activities require large scale, regular and systematic monitoring… Read More »

GDPR is coming

From May the 25th, the new General Data Protection Regulation(GDPR) will come into force and all advertisers targeting EU recipients will have to comply with the new rules aimed at protecting individuals personal data. The Information Commissioner’s Office (ICO) has decrypted the obligations advertisers will be subject to when the new regulation comes into force.… Read More » delivery issues

You might have been experiencing delivery issues to “” recipients, as of the beginning of the month, has been experiencing severe issues generating delays in the reception of incoming emails. A large part of emails aimed at users are currently being rejected with the following SMTP response: 421 4.3.2 All server ports are busy… Read More »