Your welcome series is the most important automation in your entire email marketing program. It is not the flashiest, and it does not get the attention that Abandoned Cart flows or seasonal campaigns do, but nothing else you build will have a bigger long-term impact on your email marketing list performance.
Here is why. The moment someone subscribes to your email list is the highest point of interest they will ever have in your brand as a new contact. They just took an action on your website. They raised their hand and said they want to receive updates from you. The attention you have in that window is more than you will have at almost any other point in the relationship. What you do with it in those first few days determines whether they become a customer or someone who forgets they ever signed up.
A well-built Welcome Series delivers on your Opt-In Offer, introduces your brand in a way that makes people genuinely want to keep engaging, and drives first-time purchases from subscribers who would not have converted otherwise. Getting it right is worth the effort.
Email One: Deliver What You Promised, Immediately
The first email in your Welcome Series should be triggered immediately upon someone subscribing, and it should do one primary thing: deliver whatever you offered in your opt-in form.
If you promised a discount code, lead with the discount code. Make it impossible to miss. Put it front and center in the email with a clear call to action to use it. Do not bury it below a long introduction or make the subscriber hunt for it. They signed up (likely because of that offer), and if the first experience they have with your brand is a frustrating search for the thing you promised them, you have already started the relationship on the wrong foot.
Beyond delivering the offer, this first Welcome Email can do a small amount of light brand work. A single sentence about who you are, a clean header image, and a prominent shop button are all you need alongside the offer. Keep it focused. The goal of email one is to convert the moment they subscribe, not to tell your entire brand story. Save that for what comes next.
Ideal Trigger Timing: Immediately upon signup.
Email Two: Tell Your Brand Story
The second email in your Welcome Series is where you get to introduce your brand properly. By this point, the subscriber has received what they signed up for. They may or may not have used the discount yet. Either way, they are still warm, and this is your opportunity to give them a reason to keep paying attention beyond the initial offer.
This email should answer the question every new subscriber is subconsciously asking: why does this brand exist, and why should I care? Your founding story, your mission, what makes your products different, who you make them for, the values behind your business. You do not need to cover all of it in one email, but you need to give the reader something that makes your brand feel real and worth remembering.
The tone here should feel personal rather than corporate. Write it the way you would explain your brand to someone you genuinely wanted to impress. Use your brand voice. Let some personality come through. The brands that have the strongest email engagement are almost always the ones whose emails feel like they were written by a human who cares, not a marketing department trying to check a box. The subscriber is still in the discovery phase, and following up quickly keeps you top of mind.
Ideal Timing Trigger: 1-2 Days After Signup.
Email Three: Show Them Your Best
By the third email, your subscriber knows who you are and why you exist. Now it is time to show them what to buy. This email is a curated showcase of your best selling products, your most loved products, or a collection that reflects the best of what your brand does.
Do not present your entire catalog. Curate it. Showing a subscriber eight to twelve products with clear photography, brief descriptions, and direct links to purchase is far more effective than linking to your full product page and asking them to figure out where to start. Decision fatigue is real, and reducing the number of choices makes it easier for someone to click and convert.
If you have reviews to pull in here, use them. Social proof in a product showcase email consistently improves click-through rates. A product with 300 five-star reviews is more compelling than the same product without that context, especially for someone who has never bought from you before.
Send this email two to three days after the second. If someone used their discount code from email one, you can set up a conditional split in Klaviyo to skip this email for buyers and send them directly into your post-purchase flow instead. Klaviyo makes this easy to configure and it ensures your experience stays relevant based on what each subscriber has actually done.
Ideal Timing Trigger: 1-3 Days after Email Two.
Email Four: Handle the Objections
Most subscribers who have not purchased by the time they receive this email are held back by something specific. They are not sure if the product is right for them. They are comparing you to a competitor. They have a question they have not found the answer to. They are waiting to see if a better offer comes along.
This email is your chance to address those objections directly before the subscriber goes cold. Think about the most common reasons someone hesitates to buy from you for the first time, and write an email that answers those concerns in a genuine, non-salesy way.
This might look like a FAQ format covering your return policy, your shipping times, your sizing or ingredient information, and what makes your product worth the price. It might look like a comparison that positions you clearly against alternatives in your category. It might look like a collection of customer testimonials and real-world results that build trust. The right approach depends on your product and your customer, but the goal is the same: remove whatever is standing between the subscriber and their first purchase.
Send this email three to four days after the third. By this point, a subscriber who has made it through four emails without purchasing is giving you some signal that they need more convincing. Give it to them here.
Ideal Timing Trigger: 1-2 Days after Email Three.
Email Five: Create Urgency
If your subscriber has made it to email five without purchasing, this is your final push. For subscribers who received a discount code in email one, this is the place to remind them that it is expiring or that it has expired, is expiring, and offer a brief extension. Urgency, when it is genuine and not manufactured, works.
For subscribers who signed up without a discount offer, email five might introduce a limited-time incentive, highlight low stock on products they may have browsed, or simply make a direct, confident case for why now is a good time to buy. The tone here can be more direct than the earlier emails in the series. By this point, you have built enough of a relationship that a straightforward ask does not feel out of place.
After this email, subscribers who have not purchased move into your regular campaign sends and ongoing flows. They are not lost. They are just on a longer timeline. Some of them will convert weeks or months from now after seeing a product in a campaign or being nudged by a browse abandonment flow. The Welcome Series does not have to close everyone. Its job is to close as many as possible in the critical early window.
Ideal Timing Trigger: 1-3 Days after Email Four.
A Few Things That Make Welcome Series Perform Better
Personalization makes a meaningful difference even at the basic level. Using the subscriber’s first name, referencing how they signed up, or acknowledging the product they were browsing before they opted in all make your emails feel more human and less like they are coming from a template.
Subject lines matter more in a welcome series than almost anywhere else. Your first email can lean on urgency and the offer. Subsequent emails need subject lines that create enough curiosity to earn an open without resorting to clickbait. Test them. Klaviyo‘s built-in A/B testing for flow emails lets you run subject line tests directly inside the flow without any additional setup.
Finally, review your welcome series regularly. It is not a set-it-and-forget-it automation. Your brand evolves, your products change, and your best performers shift over time. Revisit your welcome series at least twice a year to make sure the products featured are still your strongest, the copy still sounds like you, and the offers are still competitive.
If you would like help building or auditing your welcome series in Klaviyo, we work on this with brands regularly and would be glad to take a look at what you have.
Continue reading: The 6 Klaviyo flows every e-commerce store needs.