An inbound lead is a lead who found you and volunteered their details through a demo request, trial signup, content download, chat or referral. Intent is built in, which is why inbound converts several times better than outbound at every stage. The data starts clean, typed by the owner, but typos and throwaways still put 5 to 10% of inbound addresses beyond reach unless the form validates them.
Inbound is measured by volume per source, conversion rate per stage, and speed to first response, which has the largest effect on close rate of anything a team controls. The source attribution, organic search, AI assistants, referrals, paid, decides where to invest; in 2026 AI assistants became a visible share of inbound for many SaaS products.
Routing and scoring follow the same rules as any lead, with the difference that an inbound lead's first touch should arrive within minutes. The inbound software guide covers the stack from form to CRM.
A verification product receives 116 signups in nine days, 66% of them from AI assistant referrals. Of those who confirm their address, a fifth buy credits within a month. The confirmation step is the bottleneck: moving the reminder emails earlier, to 6, 24 and 72 hours, and allowing ten checks before confirmation lifts the confirmed share.
Verify a list or a single address. 100 free checks a month, unknowns refunded.
Verify Leads - FreeAyoub built BounceZero's 5-stage validation pipeline, its dedicated BGP-announced IP infrastructure, and the Patroni HA PostgreSQL cluster behind every verification. Previously built high-volume email delivery infrastructure. Trained at 1337 Benguerir (École 42 network, 2019). Open-source: bgp_analyzer.