So far in CyberPanel, we have succesfully set up DKIM and have achieved 10/10 score for outbound emails. We have also installed SpamAssassin and configured it with our mail system so that we can differentiate the spammy emails with genuine emails.
RainLoop is a simple, modern & fast web-based email client. RainLoop webmail was designed with efficient memory use in mind, so it can work fine even on low-end web servers. Regardless of mailbox size and number of mails in it,