Built to land in the inbox,
not the spam folder.
Authentication, list hygiene, engagement handling, and reputation pacing — every factor mailbox providers judge, engineered in and on by default.
Verified before first send
Per-domain DKIM keys sign every message — white-label, no shared selectors. SendFlit generates the records, verifies them against live DNS, and refuses to send from an unauthenticated domain.
SPF alignment and DMARC policy enforced out of the box. Gmail and Yahoo bulk-sender requirements: satisfied before your first campaign.
Bounces feed back instantly
Provider bounce and complaint notifications flow into an automatic suppression list. A hard bounce never receives a second email — your reputation only moves in one direction.
RFC 8058 one-click unsubscribe on every message. Recipients leave cleanly instead of hitting "spam" — the strongest reputation signal you control.