vcards-to-proton.py

This Python program converts the vCard 3.0 contact files produced by readpst into a UTF-8 CSV file suitable for importing into Proton Contacts.

It supports dry runs, duplicate detection, multiple contact files, names, email addresses, telephone numbers, organizations, addresses, websites, and notes.

See Importing Vcard contacts extracted from a PST file into Proton Mail using an Intermediate CSV file for further information.