Gtm Sequencer (by knife-co)
Outbound email sequencer that stops itself on replies, bounces and unsubscribes. Rules and event log in Supabase Postgres; Edge Function sender with jitter, per-mailbox caps and one-click unsubscribe (RFC 8058); SPF, DKIM, DMARC set by hand. Tested 7/7 live scenarios. $0 stack.
