Migrate away from PHP's imap extension?
The PHP imap extension is being dumped:
The "c-client" library that it's based on hasn't been maintained in 20 years, and is a patch monster on all modern systems. This is just a heads up that the PECL extension will probably deteriorate and become unusable soon, since (speaking as one distro maintainer) we were only bothering to keep it alive because it was a dependency of PHP itself.