Business Email for a Plumbing or HVAC Company: The Addresses That Win Jobs

A plumbing or HVAC business lives on two kinds of email: the estimate request that arrives at 9 pm from a homeowner comparing three quotes, and the purchase order from a property manager who will only work with a company that looks like one. Both are lost when they land in a personal Gmail that one person checks between jobs. This guide gives the four addresses a trades company needs, who should see each, and the emails you will send every week.

Quick answer

Create service@, estimates@, invoices@ and emergencies@ on your own domain, plus a name@ mailbox for the owner and anyone who writes to customers. Make service@ and estimates@ groups, so the office and the owner both get a copy. Put service@ on the vans and the website, estimates@ on the quote form, and invoices@ on every invoice. All of it fits in the free plan.

The addresses to create

• service@yourcompany.com, the public address. It goes on the vans, the website and the Google Business Profile. Make it a group whose members are the dispatcher and the owner.
• estimates@yourcompany.com, where the website quote form and the "request an estimate" button deliver. A group with the estimator and the owner. Estimates are leads; a lead answered within an hour wins far more often than one answered tomorrow.
• invoices@yourcompany.com, the sending address for invoices and the reply address for payment questions. A mailbox of its own, read by whoever does the books, so a "did you get my payment?" reply is not buried under service calls.
• emergencies@yourcompany.com only if you offer after-hours work. Make it a group whose members change with the on-call rota; an emergency email that only the owner sees is an emergency nobody sees on holiday.
• name@yourcompany.com for the owner and each office person. Technicians who never email customers do not need one.

The emails you send every week

Most of a trades company's outbound mail is the same five messages. Write them once, keep them as drafts or in a notes app, and send from the right address each time.

• Estimate sent, from estimates@: the price, what it includes, what it excludes, how long the quote is valid, and one line on how to accept. Attach the PDF and put the total in the body too, because many customers read on a phone and never open the attachment.
• Appointment confirmation, from service@: date, arrival window, what the customer should do first (clear the cupboard, keep the dog in), and a phone number for same-day changes.
• Approval for extra work, from the technician's or service@ address: "we found X, fixing it costs Y, reply YES to approve." A written approval ends most disputes before they start.
• Invoice, from invoices@: the invoice number in the subject line, the due date in the first sentence, the payment methods, and the job address. The invoice templates cover the reminder and overdue versions.
• Maintenance reminder, from service@: annual boiler service, filter change, pre-winter check. This is the cheapest repeat business you will ever get, and it only works if the reminders come from an address customers recognise.

Set it up in an afternoon

1. Add your domain in OquMail and paste the MX, SPF and DKIM records at your registrar. The DNS checklist has the exact values.
2. Create service@ and the owner's name@ first, then a name@ mailbox for each person who replies to customers.
3. Create the shared addresses as groups and add the right people as members. Each member gets a copy in their own mailbox, so nothing depends on one person checking one inbox.
4. Set a signature on every mailbox in webmail with the phone number, the address and the licence or registration number where your trade requires it.
5. Put the new addresses in the Google Business Profile, on the website, on invoices and on the vehicles, in that order; the profile is where most local leads start.
6. Turn on two-factor authentication for the owner account. Invoice fraud starts with a stolen inbox.

Mistakes specific to the trade

• Putting the owner's personal mobile email on the van. The lettering outlives the phone contract, and every estimate request then lands in a mailbox nobody else can open.
• Sending approvals and quotes by text only. Texts are lost when the phone is; an email from estimates@ is a record both sides keep.
• Letting the field-service app send invoices from its own address. Customers do not recognise it and replies go nowhere. Connect the app to invoices@ over SMTP, or at least set the reply-to address to invoices@.
• One address for everything. Service calls bury the estimate that would have been your biggest job of the month.
• No invoice-fraud routine. If a supplier emails new bank details, phone them on a number you already have before you pay.

Common questions

Do my technicians need email addresses?

Only the ones who write to customers. A technician who needs to send a photo of a part can send it to service@ from a phone, and the office forwards it on. Keep the mailbox count for the people who answer customers; the free plan has 15, which is plenty for a crew of ten with an office.

Can I use my field-service software with these addresses?

Yes. Jobber, Housecall Pro, ServiceTitan and similar tools either send from their own address with your name on it, or let you connect your own mailbox over SMTP. Use the second option where it exists, with invoices@ as the account, so replies come back to a mailbox your bookkeeper reads.

What goes on the van?

The phone number first, then service@yourcompany.com and the website. One address only. An estimate request sent to the van address reaches the estimator because service@ is a group, not because the customer picked the right one.