Suppression first
Unsubscribes, blocked records, and workspace rules are checked before queue construction.
Safety / control at the edge
Automation
with a brake.
Outbound touches real people and real sender identities. SynthCrew makes the boundary visible before the system acts.
See the approval gate ↗NO LIVE SENDPreview modeConceptual safety state · public capability unproven
01 / Before action
Good outbound
starts with readiness.
Sender state is visible
Mailbox health, limits, connection state, and sender role should be explicit—not hidden behind a green button.
Small, bounded actions
Use controlled limits, duplicate guards, retry rules, and safe pause behavior around external side effects.
Approval is a product feature
Human and agent approvals are represented as state, not as an instruction buried in documentation.
02 / Truth boundary
What we will
not pretend.
Current public evidence does not prove live sending, provider coverage, deliverability outcomes, or public availability. This website does not claim them.
When a provider, credential, domain, or controlled canary is missing, the correct state is blocked or unproven—not a fabricated success.
Read our principles ↗Make the boundary useful