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List Size and Type


New Member
Is there a preferred list record size? Does the file type (.csv versus .txt) make a difference?

We just upgraded to the latest Mac version and it seems to be running very slowly. I've converted our .csvs to .txt to see if that would make a difference (it doesn't seem to). I've also played with the advanced settings (retries and threads) to see if I could get a speedy pass.

Any insights or suggestions are appreciated.



New Member
Follow up question:

Any insight as to why the tool would stop in the middle of a verification? Been getting beach ball of death a few times, often around the same email number. Is it just the response back from the other end is taking that long?