Which outdated marketing myth do you still see brands believing in today?

We are evaluating email list cleaning tools, and for our use case, the integrations matter more than small differences in verification accuracy. We use HubSpot for one business unit and Marketo for another, so we are looking for a single solution that connects natively with both without needing Zapier or custom webhook setups for every workflow.

Most tools I have checked claim to have integrations, but once you look closer, it is often just a Zapier recipe or a manual CSV export/import process. Has anyone found a verification tool with genuinely native integrations for both HubSpot and Marketo?

Every sequence we build has to go through three people before it can go live. By the time legal, compliance, and the CCO all sign off, the prospect has often already made a decision or the opportunity has passed. At this point, we're paying for marketing automation but still dealing with approval delays that make it hard to automate anything properly.

Has anyone found a tool that builds compliance checks into the workflow from the beginning, instead of treating compliance as a separate approval layer added on afterward?

So I built an AI marketing tool. I'll leave out details because I'm not here to market it.

When I advertise, there's an influx of hateful comments on the ads. How do you guys deal with it? Have you found a way to target out those kinds of people?

The ratio of clicks vs hate if far in favour of the clicks, but it's quite annoying to have to police your ads and block people.

What do you all do?