Is it possible to run bulk create / update API request?


Hi guys,
I noted that MailWizz allows only bulk creation by API, but bulk Create does not update existing users, it simply skip them.

Also, MW has API function Create/Update - that allows updating each user one-by-one... Running script to update each user one-by-one takes suuuuuuper long...
I already have been thinking about direct writing to BD, but before moving to this step decided to clarify:

How do you create/update your lists in bulk? - does anyone tried to do it through BD or do you know other cool lifehacks?

Thanks :)