Should I use randomization in sending times?

Randomization in sending times helps avoid the predictable patterns that spam filters detect.

What to randomize:

Inter-message delays: Add random variation between sends (e.g., 1 to 5 minutes instead of exactly 2 minutes)

Daily start time: Vary when sending begins each day

Daily volume: Slight variation in total sends per day

Sending windows: Don't send at exactly the same hours every day

Implementation approaches:

Most cold email tools have randomization settings

Configure percentage variations (plus or minus 30%)

Set business hour windows rather than exact times

Allow skipped sends occasionally

Limits of randomization:

Won't save fundamentally bad practices

Doesn't replace quality content and targeting

Still detectable at scale with sophisticated analysis

One signal among many that filters evaluate

Combined with other practices:

Randomization plus personalization plus reasonable volume creates natural-looking patterns

No single technique is sufficient alone

Quality fundamentals matter more than pattern tricks