Exporting Local mail folders from Thunderbird into Mailbird

[kiddingguy]

I have a paid Mailbird (mailing app) subscription and would like to mail from there on.

Currently I have the mailaccount set to Thunderbird. With a local folder: C:\Users\<user>\AppData\Roaming\Thunderbird\Profiles\<string>\Mail\Local Folders

The mail is configured as IMAP.

 

Is there a way as to export the Local folder of Thunderbird into Mailbird? (or some way to do so by means of eml/pst file maybe and than to import that file(s) into Mailbird?)