Send the welcome email within 24 hours of the yes, and make it do three jobs: confirm what happens next, tell the client what you need from them, and give the first date. Below are three templates, matched to when the service starts (within a week, later, or a project that needs forms), a first-week timeline showing what each of you does, and the one-line text to send before the email is written.
The first day after "yes" is when a client is most certain about their choice and least sure what happens next. Silence in that window is where doubts start: did they get my signature, will anyone call me, do I need to do something? A short, specific email ends the doubt. For the other half of this moment, the thank-you itself, see the thank-you email to a customer.
Why the first 24 hours matter
Clients compare you with the version of you they saw while selling. If the selling was prompt and personal, and the first email after the yes takes four days, they feel a downgrade. If you reply within a few hours, they feel the same company. You don't have to do any work yet. You only have to say what the next three things are. Keep a draft of each template saved so sending takes two minutes.
The three jobs of a welcome email
One: confirm what they bought and when it starts, in a sentence. Two: list what you need from them, with a date, limited to what you need in the first week. Three: say how to reach you and how fast you reply. Leave out everything else: your process philosophy, a company history, ten links. The second sentence of the email should already contain a date.
Template 1: service starts within a week
Use this for recurring service that starts almost at once: lawn care, cleaning, bookkeeping, a delivery route.
Subject: Welcome to Cedar Row, first visit Monday morning
Hi Hannah, welcome aboard. Your first visit is Monday, October 19, between 8 and 10 a.m. Two things before then: please make sure the side gate is unlocked or text me the code, and move vehicles off the driveway the night before. You'll get a text when the crew is 15 minutes away. Questions, schedule changes, or anything you want us to look at: reply to this email or call 555-0188. We answer within one business day, usually within two hours.
Nate, Cedar Row Landscaping
Why it works: a day, a window, two actions, and a phone number. Variation for service that bills monthly: add one sentence about when the first invoice will arrive and how it can be paid. The how to ask for a deposit page has wording if a deposit comes first.
Template 2: service starts later
Use this when the start date is weeks away: an IT contract starting at the beginning of next month, a renovation waiting on permits. The risk here is the gap, so fill it with a small first step.
Subject: What happens between now and November 16
Hi Omar, thanks for signing. Your IT support starts Monday, November 16. Between now and then there are two small steps. By Friday, October 30, please send the admin login for your email system, using the secure link below, not by email. During the week of November 2, I'll visit for 30 minutes to label the equipment and photograph the network closet. You don't need to do anything else. I'll email on November 9 to confirm the start. Reach me at ines@brightnode.example for anything in between.
Ines, BrightNode IT
Notice the date of your next message. A client who knows when they will hear from you stops wondering. If your wait is long, the scope of work template records what was agreed so there's no drift.
Template 3: project with forms
Use this for design, web, legal and similar projects where you need information before you can start.
Subject: Your project kickoff: one form, 15 minutes, by Thursday
Hi Dana, thanks for choosing us for the new site. To start, I need one form from you: [link]. It takes about 15 minutes and covers your brand colors, the pages you want, and who approves what. If you can finish it by Thursday, October 15, we'll start design on Friday and you'll see the first draft on Friday, October 23. After the form, I'll send a calendar link for a 30-minute kickoff call. If any question is confusing, skip it and we'll cover it on the call.
Marcus, Fieldhouse Web
Why it works: one form, a time estimate, a "skip it" permission that removes the fear of getting it wrong, and the date the client sees something. What goes on the form is covered in client intake form: fields to ask.
The first-week timeline
Share a simplified version with the client, or at least keep it for yourself. For a project like Template 3:
| Day | What the client does | What you do |
|---|---|---|
| Day 0 (yes) | Signs, pays deposit | Sends welcome email and the text within 24 hours |
| Day 1 | Fills in the intake form (15 min) | Checks the form when it arrives and replies "got it" |
| Day 2 | Nothing | Reads the form, prepares kickoff questions |
| Day 3 | Joins the kickoff call (30 min) | Runs the call, sends a recap within 2 hours |
| Day 4 | Sends any missing files | Starts the work |
| Day 7 | Reviews the first check-in | Sends a one-paragraph progress note |
The client's column is deliberately short. Total client time in the first week is under an hour. If your own timeline has the client doing ten things in week one, shrink it. A longer version, with an owner and a done-by time for each line, is in the client onboarding checklist.
A one-line text to send first
While you write the email, send a text so the client knows it's coming. Only text clients who have given you their mobile number for this purpose, and keep it plain:
"Hi Dana, it's Marcus at Fieldhouse. Got your signature, thank you. Welcome email with your first steps coming within the hour."
If you used a different channel to sell (a call, a meeting), pick that channel for the first confirmation. For more text wording, see professional text message examples for business. Once the email is out, ask for a testimonial only after the first deliverable lands, not now: how to ask for a testimonial explains the timing.
The welcome email is the easy part when new clients keep arriving. Rocketship finds the buyers, emails them from your own Gmail, follows up, and books the meeting on its own. Plans that get you customers start at $24.99 a month (Launch), and both Launch and Frontier start with a 7-day free trial, card required. See also the sales proposal template that comes before the yes, and how to handle a difficult client if the relationship gets rough.