Workflow
A built-in verifier vs an independent one
Outreach tools often verify addresses on import. That is convenient, but you cannot see its method. Test it against an independent check on your own list.
Run both on one file
Export 200 addresses with the tool’s verdict, verify the file independently and cross-tabulate. Look at rows the tool passed that are now invalid or catchall.
Decide
If the two agree on your data, the built-in check may be enough. If not, verify independently before import. We publish no accuracy comparison against any provider.
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