The cheapest customer you will get this month is one you already served and stopped talking to.
TL;DR Segment by how long they have been gone, send something short and personal rather than a campaign, and clean out anyone genuinely dead. Nine words often beats nine paragraphs.
Audit the database first
Most service businesses have hundreds of past customers and no idea which are dormant.
Pull a list and segment
| Segment | Since last job | Approach |
|---|---|---|
| Recent | Under 12 months | Seasonal prompt, normal cadence |
| Lapsed | 12 to 24 months | Personal reactivation |
| Dormant | 2 to 4 years | One attempt, then archive |
| Cold | 4+ years, no engagement | Clean out |
Also flag
- Anyone who complained or left a bad review. Handle separately, personally.
- Anyone who moved. Check before spending effort.
- Anyone on a plan that lapsed. Different message entirely.
The nine-word email
The best-known reactivation format, and it works because it is not a campaign.
Subject: Michelle
Are you still having trouble with the upstairs radiator?
Dave
Why it works
- Plain text. Looks like a person, not a mailing.
- A question, which invites a reply.
- Specific to them, which proves it is not a blast.
- No offer, no pitch, no links. Nothing to dismiss.
The variants
Still looking for someone to sort the drains?
Did you ever get that boiler replaced?
Are you still using someone for the annual service?
The specificity is the whole trick. It requires knowing what you did for them, which is why your job records matter.
Send from a personal address, not info@. Reply-to should be a human.
When to use a longer email
For dormant customers where you have no specific hook, a slightly longer message works better.
Subject: Still around, in case you need us
Hi Michelle,
It has been a couple of years since we replaced your water heater. Just a note to say we are still here and still doing the same work.
If it is coming up on ten years old, it is worth a look before winter. Happy to check it, no charge, if you are booking anything else.
Either way, hope you are well.
Dave, Sicc Plumbing
508-555-1234
Short, warm, one soft offer, no urgency. Reactivation emails that push hard get deleted.
Limited-time offers, used carefully
An offer can help, but it changes who responds.
Rules
- Make the deadline real and honour it.
- Do not discount your standard rate. Offer a bonus instead: free check, free callout, an upgraded service.
- Tie it to something. “Before the cold sets in” is a better reason than “this month only.”
- Do not lead with it. The relationship note comes first, the offer second.
A discount-led reactivation attracts people who were price-shopping anyway. A relationship-led one brings back customers who simply forgot you existed, which is most of them.
The sequence
Three touches, then stop.
| Touch | Timing | Content |
|---|---|---|
| 1 | Day 0 | Nine-word email, personal, specific |
| 2 | Day 10 | Short note with one soft offer |
| 3 | Day 25 | “Closing your file” message |
The third one performs surprisingly well.
Michelle, I am tidying up our records. Want me to keep you on the list, or take you off? Either is fine, just let me know.
A permission-based close. It gets replies from people who ignored the first two, because it asks for a decision rather than a purchase.
Clean the list afterwards
Reactivation is also a hygiene exercise.
- Remove hard bounces immediately.
- Archive anyone with no engagement across all three touches and over three years dormant.
- Correct what you learn. Moved, changed number, sold the property.
- Note the reason where somebody tells you. That data is worth more than the reactivation.
Why cleaning matters. Sending repeatedly to dead addresses damages your sender reputation, which affects delivery to the customers who do want to hear from you.
Expectations, honestly
Reactivation response rates are modest. A few percent replying is a normal outcome, and that is fine, because the cost is close to zero and these are people who already know and trust you.
Do not judge it on the first send. Some replies arrive months later, when the thing finally breaks and your email is the one they remember.
Do it seasonally
Reactivation is not a one-off project. Run it twice a year, timed ahead of your busy season.
Six weeks before your peak is the right window, because that is when people are starting to think about it and before your calendar fills.
Pull a list of everyone you have not seen in eighteen months and send the nine-word email to twenty of them this week. It costs nothing and the replies will tell you whether there is a channel here worth building.
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