Email database scraping software

I require a software program capable of efficiently extracting email addresses from various publicly available online sources, with the ability to filter results based on predefined industry categories. The intended use is to build targeted mailing lists for marketing communications. As such, eliminating duplicate entries and excluding particular domains would help ensure the most relevant contacts are included. The software should be able to connect to and scrape data from websites, blogs, articles and other public forums through an automated process. Industry taxonomy should be customizable so addresses can be clustered by vertical such as technology, healthcare, finance etc. Raw results must then be cleaned and de-duplicated and ability to blacklist common free email providers would further refine the quality of matches. Interface requirements are simple operation for non-technical users. Data should be exported in standard formats for ease of downstream use. Performance is important as lists will be continually updated and built upon over time. Reliability and functionality are priorities over advanced features. Overall the goal is an effective extracting tool to source valid business email addresses at scale, while maintaining relevance for defined business sectors. Looking forward to reviewing proposals from experienced developers capable of delivering such a scraping application.