The templates
Each one copies with its subject line. Change the parts in brackets, and be specific about the first step: “connect your calendar” beats “explore the app” every time.
Subject: Welcome to [Product]: your [licence key / login details]
Subject: Welcome to [Product]. Start here
Subject: [Your first name] from [Product]
Subject: How is [Product] going so far?
Subject: Your [number] [Product] [licences / seats], and how to share them
Subject: Welcome back to [Product]
Welcome email subject lines
The purchase welcome is the email people search for months later, when they set up a new Mac and need their key again. So put the words they will search for in the subject: the product name, and “licence key” or “login”. Save the friendlier subjects for the notes that do not carry anything they need to keep.
- Welcome to [Product]: your licence key
- Your [Product] login, and the one thing to do first
- Welcome to [Product]. Start here
- [Your first name] from [Product] (for the note from the founder)
- How is [Product] going so far?
- Welcome back to [Product]
What makes a welcome email work
- One first step, not ten. Name the single action that gets them to the moment the product is useful, and link straight to it. A checklist of everything the app can do reads as homework, and most people do none of it.
- Send it from a person. “[Your name] from [Product]” in the From field and a real signature. “The [Product] Team” tells a new customer that nobody in particular is on the other end.
- A reply-to that reaches you. No noreply address. If the email goes out through your app or an email service, set its reply-to to the inbox you actually answer from. The replies to a welcome email are some of the most useful you will ever get.
- Everything they need to keep, in plain text. The key, the login email, the download link. Not only behind a button, and not only in an image.
- Fit it to how they arrived. A team buyer needs an invoice and a way for colleagues to get help without going through them. A returning customer needs to know whether their data survived.
And what to leave out: “We are so excited to have you on board!”, a grid of twelve features, social media icons, and “do not hesitate to reach out”. Say “reply to this email” instead; it is shorter and it is true.
The replies are the point of the email
A welcome email that invites replies gets them: a key that will not activate, a question about the yearly plan, a feature they assumed was there. They arrive in the same inbox as everything else, from people who have just paid you, and they are the conversations that decide whether a new customer is still around next month.
Moorline does not send the welcome email; your app, your billing system or you do that. It works on what comes back. Each reply stays on your list until it is dealt with and the customer has been told, and with Stripe connected their plan and payments show beside the thread, read-only, so “did my payment go through?” takes one glance. The answers you give most often in a customer’s first week make good snippets, one shortcut away in the composer, with {name} filled in as their first name. The playbook on customer support as a solo founder covers the rest of what happens after the welcome.
Questions people ask
What should a SaaS welcome email include?
What the customer needs to get in (a licence key, a login or a download link), the one step to take first, and a line saying that replying reaches a person. Sign it with a name. Everything else, such as the feature tour, the social links and the blog, can wait or be left out entirely.
What is the difference between a welcome email and an onboarding email?
The welcome email is the first one, sent the moment someone buys or signs up. Onboarding emails are the ones that follow in the first days or weeks, each nudging the customer toward one step they have not taken yet. For a small product the welcome email often is the onboarding: one step, one person, one address that answers, and a check-in a week later.
How many onboarding emails should I send a new customer?
For a small software product, two or three in the first couple of weeks is plenty: the welcome, a check-in around the end of the first week, and at most one more if they have not taken the first step. If you can tell what they have already done, skip the emails that ask them to do it. A long drip of feature announcements mostly teaches people to stop opening your mail.
Should a welcome email come from the founder or the company?
From a person. If you are the one answering support, put your name in the From field and sign it yourself. It is honest, it is what makes people reply, and a reply to "The Team" at a noreply address goes nowhere. Keep the company name in the subject or the signature so the email is recognisable.
Should a welcome email be plain text or HTML?
Plain text, or HTML that looks almost like plain text, for anything signed by a person: it reads like an email someone wrote, which is what it is meant to be. A purchase email can be designed, but put the licence key or login in the body as plain text, not only inside an image or behind a button, so it survives being forwarded and searched for months later.