Migration guide
Move your data from Microsoft 365
Your browser reads Microsoft 365 directly with a key you create there. The key stays in your browser; Calisto only receives your records, and you can stop and pick up again any day.
What moves
What comes across
Contacts
Lands in Calisto as Contacts · 9 fields
Outlook contacts
Live pull
The key you will need
Directory (tenant) ID
In the Microsoft Entra admin center, open App registrations, then the app you made for the move, and copy the Directory (tenant) ID from its Overview. The Microsoft 365 guide walks through making the app.
Application (client) ID
On the same Overview page, copy the Application (client) ID. It is a public identifier, not a secret: the app has no secret.
If Microsoft 365 ever refuses your browser, the same source switches to its export file below.
Export file
Exporting from Microsoft 365
Export your records from Microsoft 365 as a CSV, Excel, JSON or ZIP file. Any spreadsheet of names and email addresses works too.
Before your first import you accept the Data Import Terms: you bring your own data with credentials you hold, and Calisto acts as your processor. Calisto never contacts the vendor for you and never sees your key. Read the terms