David Cvetko
Creator of E164flow
David Cvetko is the creator of E164flow, a browser-based tool for formatting and reviewing phone-number columns before a CRM import.
What does David work on?
His work on E164flow focuses on the steps between receiving a contact spreadsheet and importing it: choosing country context, keeping the original fields, reviewing invalid numbers and duplicates, and exporting the columns the destination needs.
The guides cover the workflow in E164flow and explain its limits. They distinguish phone-number formatting and numbering-rule validation from checking whether a number is reachable, belongs to a person or has consent for contact.
How are these guides documented?
The guides use worked examples and link to numbering standards, file-format specifications and the destination's own import documentation where those details matter. Product limits and review steps describe the E164flow workflow; a small import sample remains necessary in your destination system.
Read about E164flow and its operator for company and contact details. For a product question or a correction to a guide, email info@e164flow.com.