Created attachment 1886 [details]
screenshot for The Bat! Voyager
Would you please make a Memo-field associated with account/folder?
Memo-field is necessary to store arbitrary information related to a mailbox/folder (date of birth, name, secret question and answer, mailbox purpose, etc.).
This information should be stored somewhere for case you have to communicate with the support of the postal service.
This information is needed to remember the purpose of a mailbox and the websites on which I am registered with this e-mail.
For example, screenshot for The Bat! Voyager
Possible dupe of #2806 (https://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=2806) which was only about folders though.