Frequency & Timing of Direct Mail

[Adrienne Bryson]

I know the primary key to success with direct mail is persistence, but just out of curiosity, does anyone find there is a "better time" for it?  Maybe you get more calls when you drop your mail on Monday, than you do when you drop on Wednesday?  Maybe people are more receptive towards the end of the month than at the beginning?  Maybe you close more deals in the fall than in the spring? etc  And do you get better response rate if you mail every 2, 4, 6, 8 weeks?