ReceivingLibrary class, which uses the same Token token= authentication as EmailLibrary.
IConfiguration:
Domains
List domains
Create a domain
null to auto-generate a slug.
Get a domain
Delete a domain
Mailboxes
List mailboxes
Create a mailbox
int? argument for quotaBytes.
Get a mailbox
Delete a mailbox
Emails
List received emails
after and before cursors are also accepted for pagination.