Delivery Email Features

Emails are still an efficient and effective way to communicate, but organizations are often concerned that their legitimate emails will not get through to their recipients. Due to the immense volume of spam on the Internet, many networks have setup filters to reject email that might be spam. To combat this, proactive measures to ensure emails get through to their recipients are taken and emails are not falsely identified as spam. Let’s dig into the different ways to ensure optimal email deliverability.

A controversial, yet still widely used method of spam filtering is subscribing to one or more publicly available email blacklists. Blacklists contain IP addresses of companies that are known to have a record of spamming Email1and1. Organizations can monitor DNS based blacklists and take proactive measures to protect their IPs from being listed.

Organizations can publish Sender Policy Framework (SPF) records for not only their domain, but for the domains they may host on behalf of their customers. SPF is an open standard that fights email address forgery and makes it easier to identify spam, worms, and viruses via records in the Internet Domain Name System (DNS). Customers using their own branded domains in the From Line of their outbound emails are encouraged to publish SPF records within their own DNS servers.

These two technologies validate a sender’s identity and ensure that an email message is unaltered in transit from sending server to receiving server. Companies can sign all email campaigns using a domain signature From Address with DomainKeys and DomainKeys Identified Mail (DKIM), to ensure optimal deliverability to receivers that authenticate messages based on these technologies, like Yahoo! Mail and GMail.

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