https://kontaktyb2b.pl/en/blog/ Guides to company data, public registers and B2B outreach. en Tue, 13 Oct 2026 12:00:00 GMT https://kontaktyb2b.pl/en/blog/b2b-telemarketing-email-poland-art-398.htmlhttps://kontaktyb2b.pl/en/blog/b2b-telemarketing-email-poland-art-398.htmlTue, 13 Oct 2026 12:00:00 GMTFrom November 2024, sales calls and emails in Poland require prior consent – companies not exempt. What Article 398 PKE says, sanctions, what remains allowed. https://kontaktyb2b.pl/en/blog/free-polish-company-data-ceidg-krs-regon.htmlhttps://kontaktyb2b.pl/en/blog/free-polish-company-data-ceidg-krs-regon.htmlTue, 13 Oct 2026 12:00:00 GMTA free Polish company database exists at the authorities. What is available from CEIDG, KRS and REGON, through which API, on what terms, and what is missing. https://kontaktyb2b.pl/en/blog/how-to-buy-a-company-database.htmlhttps://kontaktyb2b.pl/en/blog/how-to-buy-a-company-database.htmlTue, 13 Oct 2026 12:00:00 GMTBefore you buy a company database: ten questions about sources, data date, regional coverage, empty fields, consent and licence. A checklist for buyers. https://kontaktyb2b.pl/en/blog/pkd-2025-industry-codes.htmlhttps://kontaktyb2b.pl/en/blog/pkd-2025-industry-codes.htmlTue, 13 Oct 2026 12:00:00 GMTPKD 2025 has applied since 1 January 2025, PKD 2007 until the end of 2026. Which sections changed letters, which codes changed meaning and how to filter companies.