A PowerShell menu script that will help you to:
TEST + implement the process of – Bulk add an additional Proxy (Alias) E-mail addresses to the Exchange Online recipient, that are imported from a CSV file.
In case that you want to get more detailed information about the subject of – Add additional Alias E-mail by importing the information from a CSV file, you can read the articles:
- Adding Email addresses using PowerShell – Bulk mode | Office 365 | Part 4#13
- Adding Email addresses using PowerShell – Import from CSV file | Bulk mode | Office 365 | Part 5#13