Welcome email subject lines

The welcome email is the one new subscribers are waiting for, so its subject line has one job: be instantly recognizable as the email they asked for. These lines are grouped by style. Copy one, swap the brackets, and keep it honest.

Subject lines: 48; Subject lines
40 characters or fewer: 42; 40 characters or fewer
Styles: 5; Styles

Start with these three

1
You're in. Here's what happens next
Confirms the signup worked and promises useful information, without hype.
2
Your [resource name] is inside
For lead magnets, naming the thing they asked for is the strongest possible subject.
3
Welcome, {{name | 'friend'}}. Start here
Personal, short, and points to a single first step.

Replace everything in [square brackets]. Text like {{name | 'Hey'}} is a Lumail variable: it shows the subscriber's name, or the fallback after the pipe when the name is empty. Character counts below use the fallback.

Curiosity

Open a small loop the email closes. Keep it tied to what they signed up for so it never feels like bait.

1The first thing I tell every new reader39 characters
2Before you do anything else, read this38 characters
3Why I started [Newsletter name]31 characters
4The mistake most new [users] make in week one45 characters
5What you just signed up for (honestly)38 characters
6One thing we never do21 characters
7The page most people skip25 characters
8This is the email I wish I'd gotten35 characters
9A quick note before your first issue36 characters
10What to expect from me, and what not to39 characters

Benefit-led

Say what the reader gets. Specific outcomes beat generic welcomes.

11Your [resource name] is inside30 characters
12Your account is ready. Here's the fastest way to [outcome]58 characters
13Get your first [result] in 10 minutes37 characters
14Everything you need to get started with [Product]49 characters
15Your [Product] starter kit26 characters
16The 3 best issues to read first31 characters
17Your first [lesson / guide / template] is here46 characters
18How to get value from [Product] on day one42 characters
19Your shortcut to [outcome]26 characters
20Start here: the setup that saves you hours42 characters

Action-led

Welcome emails rarely need urgency. They need a clear next step, so lead with the action.

21Confirm one thing and you're set32 characters
22Start here10 characters
23Do this first13 characters
24Your next step (takes 2 minutes)32 characters
25Reply and tell me what you're working on40 characters
26Set up [Product] in three steps31 characters
27Finish your setup17 characters
28Pick what you want to hear about32 characters
29Download your [resource name]29 characters

Personal

Use the subscriber's name with a fallback, or write as a person rather than a brand.

30Welcome, {{name | 'friend'}}. Start here27 characters
31{{name | 'Hey'}}, you're in14 characters
32Glad you're here, {{name | 'friend'}}24 characters
33{{name | 'Hi'}}, a quick hello from [Your name]34 characters
34A personal welcome from the founder35 characters
35{{name | 'Hey'}}, can I ask you something?29 characters
36Thanks for joining, {{name | 'friend'}}26 characters
37{{name | 'Hi'}}, here's your [resource name]31 characters
38Hi from [Your name] at [Company]32 characters
39{{name | 'Hey'}}, welcome to [Product]25 characters

Short

Under 25 characters. Short subjects survive mobile truncation and stand out among long ones.

40You're in9 characters
41Welcome aboard14 characters
42Glad you came13 characters
43It's official13 characters
44Hello from [Company]20 characters
45Your guide10 characters
46Let's begin11 characters
47Welcome to [Product]20 characters
48Quick question14 characters

What makes these work

Recognition beats cleverness. The reader just signed up. A subject that makes it obvious this is the email they expected gets opened; a clever one can look like a stranger's newsletter.
Keep the key words in the first 40 characters. Mobile inboxes often cut subjects at around 30 to 40 characters, depending on the device and app. Put the important words first and let the rest be a bonus.
Always set a fallback. Personalized lines need a default. In Lumail, {{name | 'friend'}} prints the name when you have it and "friend" when you don't.
Pair it with preview text. The preview text is read with the subject. "You're in" plus "Here's the guide you asked for and what comes next" is stronger than either alone.
Match the sender name. Use the brand or person the subscriber saw on the signup form. A familiar sender name is what makes a short subject work.

Before sending, paste your line into the subject line tester to check its length and wording, and run the full email through the spam tester.

Frequently asked questions

What is a good welcome email subject line?

One that the new subscriber instantly recognizes as the email they expected: it names your brand or the thing they signed up for, and promises a clear next step. "You're in. Here's what happens next" is a safe default.

How long should a welcome email subject line be?

Aim for under 40 characters, with the important words first. Mobile inboxes often truncate around 30 to 40 characters, depending on the device and app.

Should I use the subscriber's name in the subject line?

It can help the email feel personal, but only with a fallback for subscribers who did not give a name. In Lumail, write {{name | 'friend'}} so nobody sees an empty gap.

Should welcome subject lines use emojis?

They are optional. If your brand uses them elsewhere, one can help a subject stand out. If not, a clear plain subject is just as effective for an email the reader is expecting.

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