Sort mails by size and show size of whole mail

[cm-schl]

Is your feature request related to a problem? Please describe.

At the moment a user can only sort his mails by date (asc/desc) but in some situations sorting by for example mail size is needed. If a user can not sort the mails by size and also can't see the actual size of an email there is no possibility to cleanup a mailbox if the quota is hit.

Describe the solution you'd like

• The option to sort by size (asc / desc) should be added beside to the possibility to sort by date.
• The size of the whole mail (mail itself and attachments) should be shown at some point.

Describe alternatives you've considered

No response

Additional context

No response