Do you store my Microsoft 365 Global Administrator credentials?
See how Signature 365 uses OAuth access tokens instead of storing Microsoft 365 global administrator credentials.
No, Signature 365 does not store your Microsoft 365 Global Administrator credentials. Signature 365 uses OAuth 2.0 for authentication, so it has no access to your credentials. Where you grant access, Signature 365 stores and uses access tokens to access Microsoft 365.
For more information, see Signature 365 reliability and security.