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Ziemek Bućko

Ziemek Bućko

Content Manager & Analyst @ Hunter.io

Poland
MCP for Data & Lead Enrichment: 10 Servers Reviewed (2026)
AI

MCP for Data & Lead Enrichment: 10 Servers Reviewed (2026)

In our test, all 5 data enrichment MCP servers sometimes described the wrong company. Walmart came back as a one-person consultancy. Here’s how 10 compare on accuracy, sources, and price.

Ziemek Bućko • 04 November 2026
MCP for Email Verification: 8 Checkers Compared (2026)
AI

MCP for Email Verification: 8 Checkers Compared (2026)

In our study, 76% of the email addresses AI models came up with were invalid. Here’s how 8 MCP servers for email verification compare on accuracy, detail, and price.

Ziemek Bućko • 04 November 2026
We Checked 488 Exec LinkedIn Profiles. Most Won't Help Your Cold Email.
Outreach

We Checked 488 Exec LinkedIn Profiles. Most Won't Help Your Cold Email.

We checked 488 US execs on LinkedIn. Only 22% had posted anything you could use in a cold email in the past month, 24% of real execs wrote nothing about themselves, and 15% of profiles looked fake.

Ziemek Bućko • 02 November 2026
We Looked Into AI SDRs, And They're Not What You Think
AI

We Looked Into AI SDRs, And They're Not What You Think

AI SDRs are sold as AI employees that can replace your sales team. We went through vendor websites and 61 official videos from Artisan, 11x, Salesforge and AiSDR to find out what these AI sales agents really do and what they cost.

Ziemek Bućko • 06 October 2026
AI for Sales Prospecting: Workflow, Tools and Where AI Breaks
AI

AI for Sales Prospecting: Workflow, Tools and Where AI Breaks

AI is great at prospect research and bad at contact data. In our study, 76% of email addresses from a dozen leading LLMs failed verification. This 5-step workflow puts AI to work where it helps and keeps a verified B2B database as the source of your contacts.

Ziemek Bućko • 06 October 2026
Should You Email Two People at the Same Company?
Outreach

Should You Email Two People at the Same Company?

When a sender contacts several people at the same company within one campaign, does that company become more likely to reply?

Ziemek Bućko • 16 September 2026
LLMs Get 76% Of Emails Wrong, But Hunter Can Easily Fix It
Outreach

LLMs Get 76% Of Emails Wrong, But Hunter Can Easily Fix It

76% of email addresses returned by an average LLM are invalid, unless you add Hunter to the process.

Ziemek Bućko • 01 September 2026
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