Alternatively, if an user adds your domain or email address to their "contacts" or their "safe-senders list" they will no longer see this notification.
In addition, senders who are on the Return Path Certification list or on a user's "safe sender's" list typically experience links and images within their messages enabled by default. An "allow list" is essentially a "free pass" which allows emails from certain senders to bypass junk email filters and other precautions. You can find out more about our filtering processes here. who helps ensure the legitimacy of certain senders via their Return Path Certification program.
IPs not previously used to send email typically don't have any reputation built up in our systems.
As a result, emails from new IPs are more likely to experience deliverability issues.
Microsoft's Smart Screen® technology is designed to provide anti-spam filtering innovations for as well as other Microsoft products like Exchange Server, Microsoft Office Outlook and Windows Live Mail.
We also leverage SPF , an email authentication technology protocol that helps address the problem of spoofing and phishing by verifying that the domain sending the email is authorized to do so.
Some of the deliverability issues are the result of sender-based software configurations.