Is this feature a default feature in newer nodebb at later versions?
Please take a look here:
Is NodeBB compliant with the GDPR (the newest legislative spam by the EU)?
About GDPR email sending
Remove GDPR page on nodebb
GDPR compliance and storage of IP addresses
NodeBB MU (Multisite Network)
nodebb concept theme v2 (w.i.p)
Multi - Language sub-forums
Who is using NodeBB?