CampaignStack vs Yadulink, compared for agencies

Yadulink starts from the right end. A profile visit, a like, a comment or an inbound invitation is someone raising a hand, and the product's core is to catch each one the moment it happens and answer it with a configured action: accept and welcome, comment back, visit, connect, message. The feed of prospects' posts, the AI comment in your tone and the reply assistant in the inbox all serve that loop. Its sequence builder even orders the steps the human way, engage first and message last, and asks you to confirm no other automation tool is on the account before it starts.

The commercial shape is clean. One plan, 99 euros a month before tax, everything in it: API, webhooks, n8n, Make, Zapier, post scheduling and an MCP server. The trust page lists the editor, the hosting region, the price, the trial and a verification date, and says in plain words that no result and no absence of risk is guaranteed. Its anti-ban guide says no responsible tool should promise zero restrictions. We agree, and we wish more vendors on this list wrote it down.

Yadulink's limits live in Settings, and you set them: a weekly connection request maximum the documentation illustrates at 200, daily visits and daily messages at 80, active days, hours and a time zone. That is honest and it is also the whole mechanism. Nothing derives a lower cap for an account with 300 connections than for one with 8,000, nothing ramps a fresh account up over weeks, and the docs describe no automatic pause when LinkedIn challenges an action. The example figure of 200 invitations a week is the top of LinkedIn's practical range, not a margin below it. The connection itself happens on a login page inside the Yadulink app, credentials encrypted and not stored according to the pricing FAQ, and the docs do not say where the session then runs or from which IP.

CampaignStack computes the numbers. Connection requests are capped at 3% of the account's own connections per day under a weekly cap of 100 to 200, every action type has a daily budget below LinkedIn's limits, a new account starts at 10% of its cap and earns the rest through use, sends are paced inside business hours from a start time that moves daily, each account runs in an encrypted browser profile behind one static residential proxy, and the first security check pauses that family of actions on its own. On a client's account, that is the difference between a policy and a promise.

Yadulink's signals are the ones LinkedIn shows you about yourself: who visited, who reacted, who asked to connect. Those are warm and worth acting on, and the product does. What it does not watch is the lead you already hold: a job change, a funding round, a headcount jump, a comment on someone else's post. Its prioritization ranks by engagement warmth, which is a fine tie-breaker and not an ICP. And when a prospect accepts and then says nothing, the sequence has one channel to try again on, because there is no email step.

CampaignStack scores every lead against every campaign's ICP and lets the score gate membership, detects job changes, title changes, post engagement, funding and headcount changes on a schedule, and runs email with its own warm-up in the same workflow so the follow-up after silence can change channel. On the writing side, Yadulink's AI drafts comments, replies and openers and shows you a preview; CampaignStack adds a critic that reads the full brief the drafter saw and returns one objection, then pins the drafts that keep failing at the top of a review queue. Both vendors expose an MCP server; Yadulink publishes the principles for its tools, CampaignStack publishes over 300 of them, inbox and review queue included.