How to do it
Collect five follow-ups you actually sent and that actually worked
Real ones, out of your sent folder. Quotes that went quiet, a job you finished last month, a customer who asked for a price and disappeared. Strip the names. These five are worth more than any prompt template you will find online, because they are the only record of how you really talk.
Create a Project instead of a chat
Projects are self-contained workspaces with their own chat history and knowledge base. Free accounts get up to five, which is enough. Name it something like Follow-ups. Everything you upload stays available to every chat inside it, so you stop re-explaining your business.
Upload the knowledge base
Your five sample emails, your service and price list, your service area, and a one-page note on what you will and will not do. On Pro, Max, Team and Enterprise, Claude switches to retrieval when the material gets large, which Anthropic describes as expanding capacity by up to 10x. On free, keep it tight.
Write project instructions that read like rules, not like a personality
Be blunt. 'Write at a sixth grade reading level. Four sentences maximum. Never apologize for following up. Never invent a price. If you need a number I have not given you, leave a bracket. No exclamation points.' Rules get followed. Vague adjectives like professional and friendly do nothing.
Know which setting to reach for
Claude has three layers. Profile instructions live under your initials then Settings then Instructions for Claude and apply everywhere. Project instructions apply only inside that project. Styles adjust tone and format of the response itself. Put your business rules in project instructions, not in your profile, or every unrelated chat starts writing like a plumber.
Feed it one line and let it do the work
'Quote 3140, $2,850 water heater swap, sent Tuesday, no reply, homeowner mentioned they were getting one other bid.' That is the whole input. You built the context once so you never type it again.
Ask for three versions, then take the shortest
Request a soft nudge, a direct one, and a close-the-file one. The short direct version wins more often than owners expect. Anything over five sentences reads like a sales sequence, and people can tell.
Save the winner as a Gmail template
Turn on Templates under Settings then See all settings then Advanced, then save the version you keep reusing from More options then Templates in the compose window. Templates are desktop only. Now the routine version costs you zero seconds and Claude only handles the odd ones.
Where this goes wrong
The parts most guides skip, and the ones that actually cost you money:
- It will invent a price if you leave room for one. Put the real numbers in the knowledge base and say in your instructions to use brackets for anything missing. A follow-up quoting a price you never agreed to is a real problem, not a typo.
- Profile instructions bleed into everything. Owners put 'write like an HVAC contractor' in the account-wide instructions, then wonder why an email to their accountant reads like a service call. Keep business voice in the project.
- Follow-ups do not fix a bad quote. If your quote had no scope, no timeline and no next step, no email rescues it. Silence after a quote is usually a quote problem. Fix the document and the follow-ups get shorter.
- Five identical examples teach it a rut. Anthropic's guidance asks for examples that are relevant, diverse, and structured. If all five of your samples are the same polite nudge, that is the only email you will ever get back.
Free tools for service businesses
Quotes, invoice follow-ups and review requests. No signup.
Common questions
Do I need a paid Claude plan?
No. Projects are available on free accounts, capped at five. Paid plans add retrieval for larger knowledge bases and team sharing. For a follow-up project holding a price list and five emails, free is genuinely enough.
How many follow-ups before I stop?
Three, then let it go, and say so in the third one. A stated last email gets more replies than a fourth unstated one, and it keeps you out of the spam complaint category.
Should Claude send the emails too?
Not at first. Draft, read, send yourself for a month. You will catch the two or three assumptions it keeps making wrong, and those go into the project instructions. Automate after that, not before.
Claude or ChatGPT for this?
Either handles it. What matters is that you set up a persistent workspace with your real examples in it instead of retyping context. The tool with the workspace you actually maintain is the better tool.
Sources
- What are Projects? — Claude Help CenterProjects are self-contained workspaces with their own chat history and knowledge base; they are available to all users including free accounts, which can create up to five; Pro, Max, Team and Enterprise get retrieval that expands capacity by up to 10x; Team and Enterprise can share projects.
- Understanding Claude's personalization features — Claude Help CenterProfile instructions are account-wide and set under your initials then Settings then Instructions for Claude; project instructions apply only inside a project; styles adjust the tone and format of responses, and the three layers can be used together.
- Prompting best practices — Anthropic developer documentationExamples are one of the most reliable ways to steer output format, tone and structure; include 3 to 5 examples for best results, and make them relevant, diverse and structured in example tags.
- Create a template in Gmail — Google Gmail HelpTemplates are turned on from Settings, See all settings, Advanced; saved from More options then Templates in the compose window; and can be sent automatically by a filter using Send template. Templates work only on a computer.
Related guides
- How to use ChatGPT for follow-up emails
- How to use Microsoft Copilot for follow-up emails
- How to use Claude for quotes and estimates
- How to use ChatGPT for overdue invoices
- A shared inbox that never drops a lead
Want this built for you instead?
Tell us the job you keep doing by hand. If we can automate it, we will quote it. If we cannot, we will tell you that too. No calls, everything in writing.