You can have a look at individual tools like those you mentioned. An alternative is to use something like clay.com which is what I’m using. Think of it as a data aggregator. Clay allows you to search or import data, add it to a table and then enrich it using various tools and integrations. As an example you can import your list from Apollo then enrich it with email addresses for the whole list, or just those not already found (eg, search only if this field is empty). You can also verify the emails at the same time. It has a load of integrations and pre-built workflows, or you can create your own by describing to the AI engine what you want to achieve and it creates the code and shows you sample results, asks if it was what you expected as an output, or whether you want to change something. For things like finding emails it uses a “waterfall” approach so if it doesn’t find the email using the first search tool, it goes to the next, then the next, and so on. As soon as the email is found and verified (you can specify whether you want to include or exclude “catch-all” email addresses) it stops and moves to the next row. It uses a credits based system and you get so many credits depending on your monthly fee. Where you have licenses already for say, Apollo.io or Prospero or others, you can link them to clay using an api key and this will reduce the number of clay credits required. Same for OpenAI. I think there are about 170 integrations available with a whole variety of tools. It is a very powerful tool itself and has a learning curve (which I’m still on as I’m just scratching the surface), but a good community where you can pose questions like “how do I…” or “I want to achieve this…” or find pre-existing templates. As an example, I’ve just used it to clean and enrich a clients database and identify which of the companies on the revised clean list have subsidiaries or offices in a specific country, then find the most senior person running that office, get their LinkedIn details, verify they are still in that role, then find and verify their email address and export as a csv for them to upload to their crm.