CampaignStack vs MimikFlow, compared for agencies

MimikFlow covers the whole LinkedIn journey from one screen: it turns your ICP into searches, adds the people who engaged with your posts or visited your profile, rates each one with a logged reason, writes the opener, follows up eight times with a video in the fourth, and then keeps talking. The setter is the part its founder built the company around, and it shows. It escalates rather than improvises when a prospect asks for a custom price or a partnership, it books into four calendar tools, and it keeps working after the booking with a reminder, a no-show follow-up and a post-meeting touch. All of that is in the $97 Pro plan.

The engineering choices around it are sensible. Sends go out four to six at a time from an hourly run instead of a burst, hours are configurable per pipeline, caps are read from the LinkedIn plan and can only be lowered, and the MCP connector inherits the same caps, so an agent can lower your volumes but never raise them. Data lives on EU servers, the help center answers the ban question in plain words, and the terms tell you in article 7 that the risk is yours. That honesty is rarer in this category than it should be.

MimikFlow does not talk to LinkedIn itself. Its help center says accounts connect through Unipile, a LinkedIn API provider used by thousands of tools, on Unipile's own authentication screen: you type the LinkedIn email, the password and a 2FA code, and Unipile manages the session from there. MimikFlow states it never sees the password, which is true and also the point: the credential now sits with a company you have no contract with, and where that session runs from is not documented on either site. For an agency, that is the client's account in a third party's hands.

The caps are real, and they are also the whole safety story. The help center lists them plainly: 100 invitations a week on a free account, 200 a week on Premium, 20 to 40 cold DMs a day depending on the plan. Two things to check against your own experience. LinkedIn's practical invitation ceiling sits around 100 a week for most accounts, so the 200 read from a Premium plan is the top of the range rather than a margin below it. And when LinkedIn does push back, the documented behaviour is that the lead turns to blocked and you are asked to pause the pipelines for 24 to 48 hours and lower the caps yourself. There is no warm-up curve for a fresh account and no automatic pause on a security check. The homepage says no user account has been banned so far; the terms say you carry the risk if one is. Both can be true, and the second one is the one you sign.

CampaignStack takes a session cookie into an encrypted browser profile on our own server, behind one static residential proxy per account, and never stores the cookie in the database. Budgets are computed per action type below LinkedIn's limits, a new account starts at 10% of its cap and earns the rest through use, each account gets a start time that moves daily, and the first security check pauses that family of actions on its own. Every number is on the safety page.

MimikFlow's Agency plan is $167 a month; a CampaignStack workspace is $299. The gap is the difference between one channel and two. MimikFlow sends on LinkedIn and nowhere else: there is no email step, no mailbox warm-up, and WhatsApp exists only as a link you paste into a message so that inbound replies reach the setter. When a prospect accepts and goes quiet, the sequence has nowhere else to go. CampaignStack runs email sequences with their own daily budgets and warm-up in the same workflow as the LinkedIn steps, so the follow-up after silence can change channel instead of tone.

Multi-client is the second thing to look at closely. The Agency plan does give each client a space with its own permissions and a calendar per account, and it charges per extra LinkedIn account on top: $79 a month each on the pricing page, or 40 euros each up to ten on the help center, which is why the table above asks you to confirm before you budget. Every workspace in CampaignStack shares one lead database, so a person a client already excluded is excluded for every consumer that could contact them, and accounts are not billed per seat.

The last difference is what reads a draft before it goes out. MimikFlow's coherence check is a good idea done narrowly: it verifies the signature, the grammatical gender and that the prospect's name, role and company are right, and it stops a flagged message even in auto mode. It does not read the message against the brief, the offer or the conversation. CampaignStack's critic reads the full prompt the drafter saw and returns one concrete objection; a draft that keeps failing ships flagged into the review queue rather than to the prospect. On a $49 plan that difference is a nicety. On an account that books your client's pipeline, it is the difference between a message that is correct and one that was worth sending.