Hello , I expected that for any user not being able to receive/see his/her emails is not a trivial matter. On the contrary there are things that for any user are VITAL. As Juran used to say .... Vital few, trivial many ! it seems that the support solve first the trivial issues [ mainly "user-error" ] and not the VITAL issues that are not user errors but system/application errors. So, it appears that the priority/severity are something cosmetic and not related to the gravity for the user. So if after 2 days I haven't received at least support's acknowledgement I decide to create a new kmail environment and use the most recent kmail archive and get the access to my emails. Is true that I lost some emails ..... however the old "akonadi" database is gone .... so I can not provide any information you may be interested in. You can continue if you wish ,,,, good luck !!!!! It seems that kmail/akonadi+MariaDB solution has some issues linked mainly when any/all of that trio is/are upgraded. That may be the case with this ticket that appears being ignored by the kde/akonadi support team . This is enough to express my regret/sadness about kde/akonadi's status of affairs. Hopefully there would better days in the future. Nd