Which IMAP flags are reliably supported across most mail servers?
- by Ben Butler-Cole
I am writing an application which reacts to emails sent to a mailbox. It retrieves the emails via IMAP. It will be deployed to a number of systems where I do not control the mail server configuration.
I would like to use IMAP flags to indicate which messages have been handled. Are the system flags sufficiently widely supported that I can reasonably depend on them in my application? Are user-defined flags sufficiently widely supported?
(If the answer is "ha ha, not a chance", then I shall use folders instead.)
Thanks
-Ben