About the show:

Automation for Agencies is the podcast where AppSumo founders meet agency owners. Host Drew Rattray scores every tool against the Agency Viability Score (AVS) rubric — white-label depth, multi-client management, reseller viability, integration flexibility, and roadmap confidence — so agency listeners know what's actually worth buying. Learn · Launch · Scale.

Guest bio:

Kevin Kariuki is the founder of Nexuscale, a sales outreach platform that runs email and LinkedIn campaigns from a single platform built on its own LinkedIn and SMTP infrastructure. After a strong AppSumo lifetime-deal run, Kevin's team rebuilt the platform's sending engine inhouse, owned mailboxes, sending IPs, domain purchase, and an internal warming network, and added AI agents that personalize and qualify outreach end-to-end.

Key quotes:

"It essentially allows you to do 70 or 80 percent of what you'd want to do in terms of outreach inside one platform. And that remaining 20, 30 percent, we're closing that gap in the next six months."

Timestamps:

00:05 — Intro

00:37 — What Nexuscale is and the tool-sprawl problem

01:47 — What makes it different: all channels in one platform

03:21 — Building its own SMTP infrastructure

04:16 — White-label: two paths (as-is and API build)

06:36 — Screen tour: domains, mailboxes, warming network

08:57 — LinkedIn outreach without Premium

10:42 — The first-login onboarding flow

13:53 — AI agents that personalize and qualify replies

16:29 — Roadmap: post-engagement leads, voice, cold-dial

18:36 — Team management and unlimited brands per login

19:01 — Best fit: agencies running both channels

Resources:

FREE NexusScale Playbook

Get NexusScale

Affiliate disclosure:

Automation for Agencies may earn a commission if you buy Nexuscale through our AppSumo link. Reviews are scored independently against the AVS rubric and are never adjusted based on commercial relationships.