I do about the same thing, although not as methodical as this. Even more effective if you send this email on the 26th or the 27th of the month. They have quota

I do about the same thing, although not as methodical as this. Even more effective if you send this email on the 26th or the 27th of the month. They have quotas to make for the month and your sales lead will suddenly get a lot of attention in the last day or two of that month.