Maintainers for akonadi are Debian Qt/KDE Maintainers <debian-qt-kde@lists.debian.org>.
You may want to refer to the following individual bug pages: akonadi-backend-mysql, akonadi-backend-postgresql, akonadi-backend-sqlite, akonadi-server, libkf5akonadi-data, libkf5akonadi-dev, libkf5akonadi-dev-bin, libkf5akonadiagentbase5, libkf5akonadicore5abi2, libkf5akonadiprivate5abi2, libkf5akonadiserver-dev, libkf5akonadiwidgets5abi1, libkf5akonadixml5.
You might like to refer to the akonadi package page, or to the Package Tracking System.
If you find a bug not listed here, please report it.