Authentication, Whitelist and BIMI In addition to the options already mentioned, companies can take further measures to make it easier for emails to reach the recipient's mailbox: During authentication, the receiving mail server checks that the sender is not using a foreign identity. To do this, the sending mail server and the domain of the bounce address are analyzed and checked using different authentication systems. The most common methods are Sender Policy Framework (SPF) and Domainkeys Identified Mail (DKIM). Briefly explained: SPF records contain detailed information about the servers used to send emails. The receiving mail server uses the SPF record to check whether the email comes from an authorized mail server.
If not, the email is declared as spam. With the DKIM process, the sending system adds an encrypted signature to outgoing messages, which the receiving mail server uses to check whether the email really comes from the italy number data specified sender. In addition to SPF and DKIM, there are other methods for authenticating emails, such as DMARC (Domain-based Message Authentication, ). You can find out more about how DMARC works here . Once the sender has been clearly identified, the next step is to check whether the sender is on a whitelist . Whitelists contain all domains and IPs known to the Internet service provider or recipient that are trustworthy.
Being on a whitelist has several advantages. As a rule, there is no need for a server-side spam check and the email is delivered directly to the recipient. In addition, mailings often have a better display because images, links and other special elements are displayed immediately and not suppressed. Email providers usually rely on public whitelists. The best-known providers are the Certified Senders Alliance (CSA), Return Path and TrustedDialog. To be included in a public whitelist, the sender must prove their authenticity and provide best practice examples. Brand Indicators for Message Identification (BIMI) is a new process that increases brand visibility and makes it easier for consumers to identify fraudulent emails in their inbox.