Author
Patrick Driscoll, Co-Founder & CEO
Published Date
June 10, 2026
The pattern looks like this: email revenue is down a little one month. Down a little more the next. Each drop feels small enough to explain away -- a slow season, a weak subject line, an off-brand campaign. None of it feels urgent until you add the numbers up and realize your email and SMS revenue is half of what it was six months ago.
This is the silent revenue drop. It rarely comes from one catastrophic event. Four separate problems each degrade by 15 to 20% independently: deliverability slips, flows go stale, campaigns get lazy, the list bloats with unengaged subscribers. Each one looks manageable in isolation. Together, they compound into a revenue cliff that took months to build and feels impossible to climb back from.
This article is the four-part audit we run on every brand that comes to us with declining email revenue. The order matters -- most brands start in the wrong place and wonder why nothing improves. Work through these layers in sequence and your email revenue will trend back toward 30 to 40% of topline within 30 to 90 days.
Watch the Full Breakdown on YouTube
Patrick walks through the complete four-part email audit live -- deliverability, flows, campaigns, and list health -- with specific benchmarks and fixes for each layer.
Part 1: Deliverability -- Fix This Before Anything Else
Deliverability is where the audit starts, and it is the layer most brands skip. The logic is simple: the best flows and campaigns in the world produce nothing if your emails are landing in spam or the promotions tab. Everything else in this audit depends on clean deliverability underneath it.
Here is how to check whether deliverability is contributing to your revenue decline:
CHECK 1 | Klaviyo Open Rates (Last 30 Days): Healthy baseline for a warmed list: 35% minimum, 40 to 50% is strong. Below 20% is a clear signal that inbox placement is compromised. |
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CHECK 2 | Google Postmaster Tools: Shows your domain reputation with Gmail. Low or bad reputation means you are being routed to spam for 40 to 60% of your list. A bad Gmail reputation almost always correlates with poor performance on Yahoo and Outlook. |
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CHECK 3 | Blacklist Check: Run your sending domain through a blacklist checker. If you are listed, inbox placement is impacted across every email provider simultaneously -- not just Gmail. |
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Deliverability problems come from three sources consistently: mailing unengaged subscribers too aggressively, high unsubscribe and spam complaint rates that signal to inbox providers your audience does not want your content, and sending volumes that spike sharply during promotional periods.
The Black Friday Deliverability Hangover Sending at double or triple your normal cadence during major sale events is one of the fastest ways to damage your sender reputation. Inbox providers see the volume spike combined with a rising unsubscribe rate and flag your domain accordingly. That damage persists for weeks or months after the campaign ends. Plan sale period cadence intentionally and segment to engaged subscribers only during high-volume windows. |
Deliverability Priority Rule Fix deliverability before running any campaign or flow optimization. Until your domain reputation is clean and open rates are above 35%, every dollar spent on email creative and strategy is operating at reduced effectiveness. Deliverability is the foundation -- everything else sits on top of it. |
Part 2: Flows -- Your 24/7 Revenue Engine
Flows generate revenue whether or not you sent a campaign today. When flow revenue drops, the cause is almost always one of two things: missing flows that should be active, or existing flows that are stale -- running on copy, creative, and subject lines that have not been refreshed in months.
Every Shopify brand should have all seven of the following flows active and current:
Flow | Purpose | Minimum Length |
|---|---|---|
Welcome Series | Highest-performing flow in most accounts. New subscribers are at peak brand curiosity -- convert them now. | 5+ emails over 7 to 10 days |
Abandoned Checkout | Highest purchase intent of any non-buyer segment. Someone reached checkout and did not complete. | 3 to 5 emails over 24 to 48 hours |
Browse Abandonment | Someone viewed a product page and left. Showed intent without converting. | 2 to 3 emails triggered within hours |
Post-Purchase Series | Eliminate buyer's remorse, build product habit, and drive the second purchase to increase LTV. | 4 to 6 emails over 30 to 45 days |
Win Back Flow | Targets customers who have not purchased in 60, 90, or 120 days at a fraction of acquisition cost. | 3 to 4 emails with escalating offer |
Sunset Flow | Re-engage or suppress subscribers inactive for 180+ days. Critical for protecting deliverability. | 3 to 5 emails, then suppress non-openers |
Back in Stock / Price Drop | Notifies customers when inventory returns on items they viewed. Prints revenue without paid spend. | 1 to 2 time-sensitive emails |
Having all seven flows installed is necessary but not sufficient. The second part of the flow audit asks when each flow was last meaningfully updated. Creative burns out in email just like it does in paid ads. A welcome series running the same copy and imagery for 18 months will show declining open rates that reflect the content's age.
Flow Refresh Cadence Audit every active flow approximately every 90 days, adjusted for traffic volume through that flow. A refresh covers: subject line split tests, updated product creative, sharpened body copy, and a review of the offer in each email. A welcome series refresh on a stale account can move email revenue meaningfully within the first 30 days after launch. |
The welcome series deserves particular attention. It is the highest-performing flow in almost every account we manage because new subscribers arrive at maximum attention and brand curiosity at the moment of opt-in. A single-email welcome series is leaving significant revenue behind. A well-structured welcome series runs five or more emails over seven to ten days, moving through: offer delivery, product education, social proof, objection handling, and a final urgency reminder before the welcome offer expires.
Part 3: Campaigns -- Cadence and Content Mix
Campaign failures fall into two opposite patterns: not sending enough, or sending too much of the wrong type. Both produce declining revenue, but for different reasons and with different fixes.
Cadence: The Revenue Is in the Sends You Are Not Making
Two to four campaigns per week is the right range for an engaged list. Below two per week, you are leaving consistent, predictable revenue uncollected. Above four, unsubscribe rates climb and engagement drops as the list fatigues. If your current cadence is one email per week or fewer, increasing to three will move your revenue number within the first month -- before any optimization of creative or copy.
The Send More Calculation If you are generating $1,000 per campaign send and sending once per week, a shift to three sends per week adds approximately $8,000 per month in revenue from the same list, same offers, and same creative. Run this math on your own numbers. The revenue is often in the sends you are not making, not in the optimization of the sends you are. |
Content Mix: Do Not Train Your List to Wait for Discounts
When every campaign is a promotion or a sale, your list learns to wait. Customers who receive discount after discount stop buying at full price. They defer purchase decisions because they anticipate a better offer next week. The result is a list of discount buyers with lower LTV, higher return rates, and low tolerance for any email that does not include a coupon code.
Email Type | Share of Sends | Examples | Primary Function |
|---|---|---|---|
Value Emails | 60% | Product education, brand stories, customer case studies, founder updates | Build loyalty and relationship that makes promotional emails convert |
Promotional Emails | 40% | Sales, new product launches, limited quantities, bundles, restocks | Drive purchase -- but not every promo needs a discount code |
Value emails are not soft newsletter content. A value email makes the customer smarter about your product category, more connected to your brand story, or more confident about a purchase they have been considering. These emails do not always generate direct attributed revenue -- but they build the relationship that makes promotional emails convert when they arrive.
Promotional Emails Without Discounts Not every promotional email needs a coupon code. A new product launch is promotional. A limited-quantity alert is promotional. A bundle offer is promotional. A restock announcement is promotional. You can drive purchase behavior without training your list to expect a discount every time you send. |
Part 4: List Health -- A Big List Is Not Always a Good List
List size is a vanity metric. If your list has grown over the past two years while open rates have dropped, you are not building an audience -- you are building a liability. Every unengaged subscriber you send to pulls deliverability down because inbox providers track engagement at the domain level and use it to determine where future emails land.
Here is the segmentation framework we use across every account we manage:
ACTIVE -- Opened or Clicked in Last 90 Days |
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This is your core audience. Send them everything -- value emails, promotional campaigns, new launches, and all flow sequences. These subscribers are actively engaging with your brand. Monitor this segment size over time. If it is shrinking as a percentage of your total list, you have either a top-of-funnel acquisition issue or a flow engagement problem that needs addressing. |
WARM -- Opened or Clicked Between 91 and 180 Days Ago |
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These subscribers are fading but recoverable. Send value-heavy content and brand stories rather than promotions. The goal is to get them re-engaged and back into the 90-day active segment before they fall into the lapsed bucket. Do not lead with high-discount promotional emails for this segment. Win their attention back with value first, then convert with an offer once re-engagement is established. |
LAPSED -- No Open or Click in Over 180 Days |
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Route these subscribers directly into your sunset flow. The flow attempts re-engagement with high-contrast content -- a plain-text personal email, a compelling brand story, or a strong offer. Anyone who does not engage gets suppressed from future sends. Suppressed means removed from active sends, not deleted. Their record remains in your account. A future purchase or re-opt-in automatically moves them back to the active segment. |
The No-Segmentation Mistake Sending every campaign to your entire list with no segmentation is one of the most common and most damaging mistakes in e-commerce email. Inbox providers track whether your unengaged subscribers open and click, and they use that signal to decide where your emails land for everyone. A list of 20,000 engaged subscribers consistently outperforms a list of 80,000 that includes a large unengaged segment. |
CLIENT RESULT: Health & Wellness Brand Email revenue recovering after 8-month decline The brand came to TVG after eight months of declining email revenue. Their team had been adjusting campaign timing and subject lines without seeing movement. We ran the four-part audit in order: identified a deliverability issue from over-sending to unengaged segments during a large Black Friday campaign, refreshed two stale flows including a welcome series unchanged for over a year, increased campaign cadence from one to three sends per week, and suppressed the 180-day lapsed segment. Within 30 days, open rates improved. Within 60 days, email revenue was trending back toward its pre-decline baseline. |
Running the Audit in the Right Order
The sequence of this audit is not arbitrary. Each layer depends on the one before it:
Deliverability first. Nothing else matters until your emails are landing in inboxes. Fix domain reputation and suppress unengaged segments before optimizing any content or copy.
Flows second. Confirm all seven flows exist and are current. Stale flows are a daily revenue leak running in the background without triggering any obvious alert.
Campaign cadence third. Increase send frequency to two to four per week if you are below that threshold. The revenue is often in the sends you are not making.
Content mix fourth. Shift toward the 60/40 value-to-promotional ratio. Stop training your list to wait for discounts.
List segmentation fifth. Implement the active, warm, and lapsed segments. Route lapsed subscribers into the sunset flow. Suppress non-responders from future sends.
Symptom | Likely Cause and First Fix |
|---|---|
Open rates below 20% across all sends | Deliverability -- check Google Postmaster, run blacklist check, suppress lapsed segment |
Flow revenue declining without clear trigger | Stale flows -- audit welcome series and abandoned checkout first, refresh copy and creative |
Campaign revenue flat despite consistent sends | Wrong content mix -- shift toward 60% value emails, reduce discount frequency |
List growing but revenue per send dropping | List bloat -- segment into active, warm, and lapsed; install sunset flow immediately |
High unsubscribe rate after promotional sends | Over-promoting to unengaged segment -- tighten segmentation before next campaign |
Revenue down but no single obvious cause | All four issues present simultaneously -- run the full audit in order, fix deliverability first |
Watch the Full Breakdown on YouTube
Patrick walks through the complete four-part email audit live -- deliverability, flows, campaigns, and list health -- with specific benchmarks and fixes for each layer.
Get a Free Core Growth Audit Our team will analyze your contribution margin, true CAC, LTV:CAC ratio, retention system, and MER -- and hand you a personalized roadmap showing exactly where you're bleeding, underleveraged, and ready to scale. No pitch. Just the numbers. |
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About TVG
The Visionary Group (TVG) is a full-service e-commerce growth agency helping 7 and 8-figure Shopify brands scale profitably through paid media, creative strategy, email, and analytics. TVG spends and manages millions in Meta ad spend monthly across active brand partners.
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