CampaignStack vs Aimfox, compared for agencies

Aimfox has built the thing every agency at scale eventually asks for. When a client wants twenty sending identities and has four employees, no amount of sequencing software fixes that, and Aimfox is the only vendor here that answers it directly: rent the profiles, warmed and ready, and plug them into a campaign. Delivery is one to three business days, a banned profile is replaced in one to two, and the headline, banner, position and skills are yours to edit.

The rest of it is built out too. Proxies across more than 60 countries and 10,000 addresses come with the subscription and are chosen for you, which closes the login-location gap that gets a connected account challenged. The Agency plan at $499 for 20 seats is real white label, on your own domain after a DNS check, with branded client logins and a custom sender address on transactional email. That is deeper than what CampaignStack offers today, and if branded client access is the product you sell, that row alone may settle it.

Two sentences decide this one, and both are published by the companies involved. Aimfox's help center, describing what you rent: the profiles "have been created by Aimfox and are not associated to real people." LinkedIn's user agreement, under its list of Don'ts: "Create a false identity on LinkedIn, misrepresent your identity, create a Member profile for anyone other than yourself (a real person)." Aimfox's own avatars page frames the purpose as going "past the LinkedIn limits."

Read those together and price the risk yourself. The profiles are, in Aimfox's words, "purposefully restricted to the Aimfox platform," so the sending capacity you rent is not an asset you keep; cancel and it stays behind. And a replacement guarantee measured in business days tells you what the expected failure is, and that the vendor has already priced it happening.

CampaignStack does not rent profiles and will not add them. Every account it sends from is one a real person connected and can disconnect. That is a smaller ceiling, and it is the ceiling LinkedIn's terms describe.

Aimfox is more open about limits than most of this category. You set weekly ceilings between 10 and 200 for connection requests, message requests and InMails, pick a warm-up of 7, 14 or 30 days, and it works out the safe daily numbers from both and spreads them across the week. Anyone who has used a tool that silently offers 75 invitations a day will recognise how much better that is.

The gap is what a slider cannot see. It knows what Aimfox sent. It does not know that your client spent Tuesday morning sending thirty connection requests by hand from the LinkedIn app, and LinkedIn counts those against the same account. CampaignStack reads each account's previous complete day back from LinkedIn, subtracts activity it did not cause from today's ceiling, and sets the warm-up floor from the account's own trailing 28 days rather than a speed you picked at setup. When the first security check lands, the affected action family pauses for 24 hours on its own while replies to people who wrote in keep going.

Aimfox executes well and decides nothing. Advanced filters narrow an audience the day you build the campaign, and after that the list is fixed: nobody is added because they changed jobs last week, nobody is dropped because they left the role you targeted, nothing reacts to the funding round that makes the timing right. AI Variables will personalise the message, and no second pass reads what the model wrote before it reaches the prospect. There is no queue where a doubtful draft waits for a human.

That layer is what CampaignStack is. Signals update lead records as they happen, ICP scores decide campaign membership rather than a filter you set in March, every draft faces a critic that objects in one concrete sentence and forces a rewrite, and anything still failing is flagged and parked for a person. Email lives in the same graph instead of a second subscription. Both tools expose an MCP server, so compare them on what an agent can reach: Aimfox gives it campaigns, leads, templates, conversations and webhooks; CampaignStack adds the scoring, the signals and the review queue, across over 200 tools.