When you send emails from Envoke - or any other email provider - your messages need to be authenticated to ensure that spam and malware filters on the recipient side can confirm that your messages and identity aren't forged.
What is DKIM?
DomainKeys Identified Mail (DKIM) is an email authentication method that is used to verify the identity of the email sender and detect forged email addresses, which is a technique often used in phishing and email spam.
How does DKIM work?
DKIM works in the background. There is no change in the way you use Envoke. It is setup on the domain level by the person/department that manages your domain name. Once setup, it allows spam and malware filters to authenticate your emails; to confirm that they are coming from you and not by someone else claiming to be you. This in turn, increases inbox delivery. Spam filters trust DKIM and as such fewer emails are filtered out as suspicious.
Default vs. custom DKIM setup
Envoke provides default DKIM authentication with each outgoing email, but in some cases this isn't sufficient to satisfy email filters and custom authentication is needed for the sending domain.
Custom DKIM setup works especially well for internal messages where the sender email address and the recipient email address is from the same domain, for example from email@example.com to firstname.lastname@example.org