external_idstring required
Your id for this customer. Unique in your account; cannot change.
namestring
Display name. Defaults to external_id.
default_from_domainstring nullable
Completes a bare from local part ("billing" → billing@<domain>) on sends that name this tenant.
stream_policy'all' | 'transactional_only'
transactional_only refuses product email for this tenant.
daily_limitinteger nullable
Most recipients this tenant may email per UTC day, on top of its sending ramp. null for no limit of your own.
metadataobject nullable
Any JSON object, up to 4 KB, for your own use.