Comment 2 for bug 1821868

with debug packages

org.kde.akonadi.ETM: was collection fetch job: collections: 0
org.kde.pim.akonadicore: Failed SpecialCollectionsRequestJob::slotResult "Invalid parent"
org.kde.pim.mailcommon: "The Email program encountered a fatal error and will terminate now.\nThe error was:\nInvalid parent"
org.kde.pim.akonadiserver: DATABASE ERROR:
org.kde.pim.akonadiserver: Error code: 1062
org.kde.pim.akonadiserver: DB error: "Duplicate entry '4-outbox' for key 'CollectionTable_parentAndNameIndex'"
org.kde.pim.akonadiserver: Error text: "Duplicate entry '4-outbox' for key 'CollectionTable_parentAndNameIndex' QMYSQL3: Unable to execute statement"
org.kde.pim.akonadiserver: Query: "INSERT INTO CollectionTable (remoteId, remoteRevision, name, parentId, resourceId, enabled, syncPref, displayPref, indexPref, cachePolicyInherit, cachePolicyCheckInterval, cachePolicyCacheTimeout, cachePolicySyncOnDemand, cachePolicyLocalParts, isVirtual) VALUES (:0, :1, :2, :3, :4, :5, :6, :7, :8, :9, :10, :11, :12, :13, :14)"
org.kde.pim.akonadiserver: Error during insertion into table "CollectionTable" "Duplicate entry '4-outbox' for key 'CollectionTable_parentAndNameIndex' QMYSQL3: Unable to execute statement"
org.kde.pim.akonadicore: Failed SpecialCollectionsRequestJob::slotResult "Could not create collection outbox, resourceId: 3"
org.kde.pim.maildispatcher: Failed to get outbox folder. Retrying in: 5000
org.kde.pim.akonadicore: Failed CollectionCreateJob. "Could not create collection outbox, resourceId: 3"
"No file selected."
org.kde.pim.akonadicore: not referenced 3
org.kde.pim.maildirresource: the resource is not properly configured: there is no config file for the resource. We create a new one.
QObject::killTimer: Timers cannot be stopped from another thread
org.kde.pim.akonadicore: not referenced 14

Also, if akonadiserver is started manually before everything is ok.