- 01Day 2: make it easy to answer
Short, specific, and ending in a question that is easier to answer than to ignore: "Did the quote come through okay? Happy to walk through the two options if useful. Would Thursday or next week suit for the work?" You are not asking for a decision. You are asking for a reply.
- 02Day 5: add something, do not just ask again
A photo of a similar job, a note on lead times ("we are booking three weeks out, so if this is a June job it is worth locking in"), or an answer to the question they probably have. Give them a reason to re-open the thread that is not your need for an answer.
- 03Day 10: close the file, politely
A message that gives them an easy out gets more replies than any other: "I will assume the timing is not right and close this off on my end. If anything changes, the quote stands for 30 days, just reply here." A surprising number reply within the hour to say "No, wait."
- 04Make it automatic, and make it stop
The sequence has to attach itself to every quote the moment it goes out, and it has to pause the instant the customer replies. That is the difference between a system and a reminder, and it is what Kaizen does by default. No estimator has to remember anything, and no customer ever gets a day-5 message after replying on day 3.
Silence after a quote is not a no. It is the absence of a system.