Email Throttling verifiedcriticalWritten by the Hub
Where a throttle profile is built — forty-two settings in eight groups — and bound to the traffic it governs.
In detail
The largest form in the console, and the one that matters most for warm-up. Eight groups: per domain limits, per address limits, per connection limits, connection settings (TLS mode, spreading strategy, bind error handling), queue limit, greylisting strictness, seventeen SMTP timeouts, and the handling of unexpected responses. An empty field means "inherit", not "zero" — the same convention as our own plan settings. The behaviour switches are three-state for the same reason: on, off, or cascade to the default, which is why the database keeps flags and meaningful as a pair. Rules bind a profile to a domain, a sending address, a pool, or any combination. A rule belongs to one profile only: pointing a second profile at a combination that is taken moves the rule and says "result": "stolen". Profiles that match through different dimensions all apply, strictest value winning.