You finish a job. The customer is happy. You send an invoice, get paid, and move on. A few months later, when they need electrical work or plumbing again, they call someone else. You never hear from them.
This is the wasted opportunity that costs UK tradespeople thousands of pounds every year.
A customer who's already bought from you is far more likely to buy again than a stranger. They know you. They trust you. They've already gone through the decision process. But most tradespeople have no system for staying in touch with past customers.
Email marketing solves this. And it's not complicated.
Why Email Works Better Than Social Media for Trades
Social media is a rented platform. Facebook decides what your followers see. Instagram decides how many people see your posts. TikTok could change its algorithm tomorrow. You have no control.
Email is different. When someone gives you their email address, you own that relationship. You can reach them anytime, and they see it (assuming it's not spam). No algorithm. No changing rules.
And for trades specifically, email converts better than social. Why? Because email is personal. An email from your plumber saying "Time for your annual boiler check?" gets opened and acted on. A Facebook post about boiler maintenance gets scrolled past.
The ROI on email is exceptional. Industry data suggests for every £1 spent on email marketing, trades see £15-45 in return. Compare that to social media (£1-5 return) or paid ads (£3-15 return). Email wins.
The Three Types of Emails That Work for Trades
1. The Service Reminder
Every service benefits from reminders. "Your boiler was serviced in April 2024. Time to schedule your 2025 check." "We replaced your gutters three years ago. Time to inspect them." These emails directly generate repeat business.
A heating engineer who sends annual service reminders sees 40-50% of customers call to schedule. That's repeat revenue from customers you've already won, at low cost.
2. The Educational Email
Share useful information. "Five signs your plumbing needs attention." "How to prevent electrical fires in your home." "Winter maintenance checklist for your property." Educational emails build authority and trust. They keep your business top of mind. And they generate inbound inquiries from people who've learned something valuable from you.
3. The Offer Email
Occasional promotions or special offers. "Spring maintenance special — 10% off boiler services this April." "Referral reward — bring us a customer and get £50 credit." These emails work best when sent to past customers, who are more likely to act on them.
How to Start Collecting Email Addresses
You probably have email addresses already. Every customer you've invoiced has an email on file. Start there. Create a spreadsheet or export them from your accounting software.
Going forward, always collect emails. When you quote, ask for email. When you invoice, make sure you have email. When you follow up, confirm you have the right email.
Make it part of your process: phone, address, email. No email, no quote.
For new customers, offer a lead magnet to capture emails: "Subscribe to our maintenance tips and get a free checklist." Even a simple checklist signed by you generates 30-40% subscription rates.
The plumber's email win: A Bristol plumber with 400 past customers started sending monthly "maintenance tips" emails. Nothing aggressive. Just useful information. Within six months, 15 customers had called asking for various services. 12 of them became jobs, generating £8,000+ in revenue. His email cost? Maybe £20/month. His return was 400x.
What Email Service Should You Use?
You don't need complicated software. Start with what's familiar. Mailchimp is free up to 500 contacts. Brevo (formerly Sendinblue) is free up to 300 emails per day. If you want something specifically designed for small businesses, ConvertKit or Flodesk work well.
The important part is not the tool — it's sending the emails. Start simple. You can upgrade tools later if you grow.
What you need:
A way to collect emails (a form on your website or a simple spreadsheet). A way to send bulk emails (Mailchimp, Brevo, or similar). A way to track opens and clicks (all these platforms do this).
That's it. You don't need automation or complex workflows to start.
Email Templates That Work for Trades
Service Reminder Email:
"Hi Sarah, Your boiler service was completed on April 12, 2024. To keep it running efficiently and safely, we recommend an annual check. Your next service is due soon. Click below to schedule, or reply to this email. We'll fit around your schedule. Cheers, [Your name]"
Educational Email:
"Five signs your plumbing needs attention: 1. Slow drains (could mean buildup). 2. Rust-coloured water (pipe corrosion). 3. Water stains on ceilings (hidden leaks). 4. Gurgling sounds (drain issues). 5. Damp patches (water damage). If you're seeing any of these, it's worth a quick inspection. No cost for an initial look. Just reply or call. Cheers, [Your name]"
Referral Email:
"Hi there, If you know someone who needs electrical work, plumbing, or heating repairs, send them our way. We'll give them great service, and we'll give you £50 credit toward your next job. Just reply with their details or have them mention your name when they call. Thanks for being a great customer. Cheers, [Your name]"
Notice the tone: friendly, straightforward, no fluff. This is how you talk to a customer on site. Email should sound the same.
How Often Should You Email?
Start conservatively. One email every two weeks is reasonable. Monthly is fine if you're unsure. The worst mistake is emailing too much and annoying people, so they unsubscribe.
Better one great email per month than four mediocre ones per week.
Rotate your email types: educational email one month, service reminder the next, offer the month after. Mix it up so people don't feel spammed.
Track your open rates and click rates. If people aren't opening your emails, change your subject line or email frequency. If they're opening but not clicking, improve the offer or call-to-action.
The Subject Line That Gets Opened
Email open rates for trades typically run 20-35%. That means 65-80% of people don't even open your email. The subject line determines this.
Bad subject lines: "April Newsletter" (boring). "Special Offer!" (generic). "Read This!" (sounds spammy).
Good subject lines: "Time for your annual boiler check?" (specific, personalized). "The #1 reason your gutters fail" (curiosity). "Quick question about your heating" (conversational). "Sarah — roof maintenance you might have missed" (personal).
Use names if you can. Ask questions. Create curiosity. Be specific. Avoid words like "free," "limited," "urgent" — these trigger spam filters and make you look unprofessional.
What Not to Do With Email
Don't buy email lists. Emailing people who never agreed to hear from you damages your reputation and violates GDPR. Only email people who opted in.
Don't send too much. One email every two weeks is better than two emails per week. You're trying to stay top of mind, not spam their inbox.
Don't make everything a sales pitch. 70% educational, 30% promotional is a good ratio. People will tolerate occasional offers if you're giving them value most of the time.
Don't ignore unsubscribes. If someone wants to opt out, let them. Forcing them to stay on your list damages your reputation and unsubscribe rates.
Don't send from a no-reply address. Send from your real email or business email. "From: John's Plumbing" not "From: noreply@example.com." It feels more personal and people are more likely to engage.
Why Email Compounds Over Time
One email to 100 past customers is £50-100 in software costs and your time. If even three people respond asking for a job, that's £1,500-2,500 in potential revenue. But the real win comes after six months of consistent emailing.
People start recognizing your name. They remember you when they need work. They're more likely to refer you. Your list grows as you get new customers. And your ROI improves every month.
By month 12, email becomes one of your most profitable channels. All because you decided to stay in touch with people who already know you.
Start This Week
Pick one email service (Mailchimp is fine). Export your customer emails. Draft one service reminder email. Send it to 50 customers and see what happens. Track the opens and replies.
One email. That's how you start. Once you see the response, you'll understand why email matters.
Your best customers aren't strangers. They're people who've already chosen you. Email keeps you top of mind so when they need you again, you're the person they call.