SMTP is still the standard for delivery of messages to servers. The tables below are a work in progress. It is primarily just quickly jotted notes. Several IMAP email servers are compared. Message retrieval features are tested for IMAP accounts, not POP accounts.
Yellow cells indicate that the property has been tested with the latest version shown.
White cells contain information from older versions. Red text indicates a significant shortcoming. No Contact Please don't hesitate to contact us if you have any questions.