A four-email welcome series, with timing

A new subscriber is the warmest your list will ever be. They typed their address a few minutes ago, they remember why, and they are watching the inbox for what comes next. Most small senders waste that window by sending nothing, or by sending one thank-you and then dropping the person into the next newsletter.

A welcome series fixes that. This post covers a four-email version we think is a sensible default: what each message is for, a timing schedule you can start with, the conditions that should stop the series early, and the exact steps in the Mailnaptic automation builder. It sits inside the wider 30-day email marketing plan for a small business, where the welcome series is one of the first automations to switch on.

Why four, and why this long

There is no law of nature that says four. Vendor guides vary: one agency guide we read recommends 3 to 6 emails over 7 to 20 days, with the first one sent immediately or within 24 hours, early emails spaced 1 to 3 days apart and later ones 3 to 5 days apart. Treat that as a reasonable range and not a measured result, because the guide does not publish the data behind it.

Four gives each message one job and keeps the whole sequence inside about a week, which is long enough to say what you need to say and short enough that the subscriber still remembers signing up. If you sell something considered, such as courses or high-priced goods, you may want six. If your product is simple, three is fine. The structure below survives either change because the jobs stay the same: set expectations, deliver value, build trust, make an ask.

The four emails, one job each

Email 1: say hello and set expectations

Send it within minutes. Someone who signs up and hears nothing for a day often forgets why they signed up, and a late first message looks like it came from a stranger. We would send it immediately.

The email needs four things: who you are, what they will get and how often, the thing you promised at signup (the discount code, the PDF, the first issue), and one easy action. A good action is a one-question preference ask, such as which topic they care about most, answered by clicking one of a few links, with the answer recorded as a tag. That gives you segmentation data on day zero, which feeds the kind of segments you can build from one sentence later.

Keep the design plain. Sender name should be a person or brand they will recognise, and the subject should say what is inside: "Welcome, here is your guide" does more than "Hello!". Tell them to add your address to their contacts if you like, but do not make it the main point.

Email 2: your best content

Two days later, give them the one thing you would show a friend who asked what you do. It might be the most-read article, the clearest tutorial or the product story that explains your approach. One thing, not five. The goal is for the subscriber to think "this was worth subscribing for" before you ask them for anything.

Email 3: how it works, or social proof

By day five the subscriber has seen you twice. Now reduce doubt. For a product business that is usually a short how-it-works explanation, delivery and returns in plain words, or a few real customer reviews. For a service it is a real client result, with permission. Use only quotes and numbers you can stand behind. An invented testimonial is worse than none.

Email 4: the first offer or ask

Day eight is the first time you ask for something. That can be a first-order discount, a booking, a reply or a referral. Keep one call to action. If you offer a discount, make it expire on a date you will really enforce, and say what the code applies to.

Timing: why 2, 3 and 3 days

The schedule above is a heuristic. The logic behind it is simple. Email 1 is immediate because it answers an action the person just took. Email 2 comes two days later, which is close enough that the signup is still fresh and far enough that it does not feel like a pile-on. After that you can widen the gap, because the subscriber has settled in and a daily cadence from a brand they met last week wears thin.

Two cautions. First, delays in the Mailnaptic builder add up along the flow, and you enter each one as a number of minutes, hours or days. A "2 days" delay then a "3 days" delay puts email 3 on day 5. Second, a delay is measured in elapsed time, so a signup at 11pm on Friday gets email 2 at 11pm on Sunday. If your audience reads on weekdays, that is worth knowing before you copy the schedule. Test with your own list rather than assuming a best time of day.

Exit conditions: when the series should stop

A fixed series is only polite if it can stop. Decide the exits before you build, because they are the part most senders skip.

Build it in the Mailnaptic automation builder

You need a verified sending domain first, because Mailnaptic will not let you activate an automation without one (the setup is covered in the help center). Then, in Automations:

One plan note. Four emails with three delays and filters is well over five steps, so this build fits Growth and above, where automations allow up to 20 steps. On Starter, with 3 automations of 5 steps each, build a three-email version: email, delay, email, delay, email.

What to measure after Mail Privacy Protection

Apple's Mail Privacy Protection stops senders learning when a message is opened and masks the recipient's IP address, according to Apple's announcement. In practice it loads your tracking pixel automatically for people who turn it on, so the open is recorded whether or not a human looked. Litmus's July 2026 data attributes 62.26% of tracked opens to Apple clients and says MPP now affects roughly 55 to 60% of all opens. That means a welcome series that appears to have a 70% open rate may be telling you very little.

So build the series without relying on opens. We go deeper in open rates after Apple Mail Privacy Protection and what to measure instead. For the welcome series specifically, watch these:

Subject-line tests on openers are unreliable for the same reason. If you want to experiment, test the thing that happens after the click, or use click rate as the winner. Do not retire a series because opens fell.

Writing the emails without sounding like a template

A welcome series is easy to write badly because everyone has read a hundred of them. Four habits help. Write in the first person, as one named human. Be specific about frequency ("one email on Thursdays"), not vague ("regular updates"). Cut every sentence that exists only to be nice. And read each email aloud once; you will hear the filler.

If you use AI to draft them, treat the output as a first pass and keep your own voice rules in the prompt. We have a post on prompts for email copy that keeps your brand voice for exactly that.

After the series ends

Four emails in eight days is a start, not a destination. Move people who finished the series onto your regular newsletter, and keep the tag so you can tell them apart later. Watch them for a month. If a fresh subscriber goes quiet, hand them to a re-engagement flow and, eventually, a sunset rule; win-back campaigns and a sunset policy for inactive subscribers covers that.

Finally, review the series once a quarter. Read the four emails as a stranger would. Check the links, the offer deadline and the exits. A welcome series that quietly offers an expired discount is worse than none.