CampaignStack vs Outreach: agents for the pipeline, not the channel

Outreach invented much of what this category takes for granted, and the platform it sells in 2026 covers more of the revenue motion than almost anything else on this page. Sequences run the outbound rhythm, the dialer moves reps through call lists, Kaia listens and coaches, deal agents watch health and now write their recommended updates without a rep touching them, a research agent refreshes account intelligence on a schedule, and forecasting calls the number. For a revenue org that wants one system from first touch to closed won, that is a real answer.

Its AI agent story is serious too. The MCP server is public and reachable from Claude, ChatGPT, Copilot and Salesforce Agentforce, there is a native ChatGPT app, and an MCP client that pulls other tools into Outreach workflows is announced as coming. Outreach is betting the company on agents, and the shipping cadence backs the bet.

Outreach's LinkedIn integration is the official Sales Navigator one, and it works the way LinkedIn allows: a sequence can hold five kinds of LinkedIn step (view a profile, interact with a post, send a message, send a connection request, other), and each one lands in the rep's task list, where the rep opens an embedded Sales Navigator window and performs the action by hand. Its own docs describe a copy button for templates, because the last inch is the rep pasting the message. Using the integration takes a Sales Navigator Team or Enterprise license on top of Outreach, and nothing sends while nobody is watching.

That is a defensible design for an in-house team where every rep owns their own relationships. It stops working when LinkedIn is the primary channel and the accounts belong to clients: throughput is capped by rep hours, the Sales Navigator seats multiply per person, and there is no safety system because there is nothing automated to keep safe.

CampaignStack runs the LinkedIn half server-side: each account lives in its own encrypted browser profile behind a residential proxy, with per-action daily budgets, usage-based warm-up, weekly invite caps, business-hours pacing and an automatic pause on a risk signal. The connection requests go out on Tuesday morning whether or not anyone is at a desk.

Outreach is shaped like its buyer: one revenue organization, per-user pricing, Salesforce or another CRM underneath, procurement on the other side of a demo. Its pricing page names four Amplify editions and the AI credit pool each carries, from 10,000 credits on Essentials to 100,000 on Pro, but no dollar figure appears anywhere on it. For the enterprise org that is normal. For an agency deciding whether a tool fits a client this quarter, it is a meeting where a price tag should be.

CampaignStack is shaped like an agency: a client is a workspace at $299 a month ($249 annual) with unlimited LinkedIn accounts and team members inside it, exclusion lists every consumer honors so one client's blocklist never leaks into another's outreach, and a decision layer (signals, ICP scoring, a draft critic, a review queue) doing the work that otherwise eats delivery hours. The two barely compete for the same buyer, which is exactly why the comparison is worth writing down.