Why This DTC Email and SMS Glossary Exists
Most glossaries hand you a definition and leave you guessing. This DTC email and SMS glossary attaches a real benchmark to every term that has one, so you can check your own numbers against what actually works.
We built it for founders who are tired of vague answers. At MAG Growth we have managed $1.2B+ in ecommerce revenue across 400+ brands, so the numbers below come from live accounts, not recycled blog averages.
You do not need to read this top to bottom. Jump to the category that matches the question you have right now.
The email and SMS terms here are grouped into five clusters. Metrics, Klaviyo flows, deliverability, compliance, and zero-party data.
What are the 31 terms in this glossary?
Here is the full list, grouped by cluster so you can jump straight to what you need.
- Metrics: revenue per recipient, click-through rate, open rate, AOV
- Klaviyo flows: flow, campaign, flow conversion rate, welcome flow, cart abandonment flow, browse abandonment flow, post-purchase flow, flow coverage
- Deliverability: SPF, DKIM, DMARC, spam complaint rate, bulk sender, one-click unsubscribe, sunset flow, unsubscribe rate, bounce rate
- Compliance: 10DLC, 10DLC registration, A2P messaging, TCPA, SHAFT, SMS opt-out rate
- Zero-party data: zero-party data, first-party data, collection methods, preference center
Who should use this glossary?
This is for DTC brand owners doing $1M to $10M who run email and SMS in-house or want to check an agency’s work. You are wearing five hats and you need a straight answer, not a lecture.
If you have ever stared at a Klaviyo dashboard and thought “is this good or bad,” this is for you. Each term ends with a benchmark so you can answer that question in ten seconds.
How should I use this glossary?
Use it two ways. Scan by category when you are auditing one part of your program, or search the page for a single term when you hit it in a report.
Every entry follows the same shape. A plain definition, why it matters to your revenue, and a benchmark where one exists.
Email and SMS Metrics Every DTC Brand Should Track
These metrics show whether your program is healthy and where revenue leaks occur.
What Does Revenue per Recipient Mean in Klaviyo?
Revenue per recipient (RPR) measures total revenue divided by recipients, showing how much each subscriber generates per message.
RPR matters because open and click rates can look fine while revenue stays flat. Automated flows generate roughly 18 times the revenue per recipient of one-off campaigns, which is why a small number of triggered sends can outearn your entire promotional calendar.
MAG Growth benchmark:Strong>
Top 10% email flows hit RPR as high as $7.79, so a healthy flow should clear $1 and a great one clears several.
Related terms: campaign, click-through rate, flow
What Is a Good DTC Email Click-Through Rate?
Click-through rate (CTR) measures the share of delivered emails that earn a click, showing whether your content and offer drive action.
CTR matters because clicks sit one step from revenue. Flow emails average a 5.58% click rate versus 1.69% for campaigns, so automated messages pull more than three times the engagement.
MAG Growth benchmark:
treat 2% to 3% as a healthy campaign floor and 5%+ as strong for flows. Below 1% on a flow is a content or targeting problem.
Related terms: flow, open rate, revenue per recipient
What Is a Good DTC Email Open Rate?
Open rate measures how many delivered emails get opened, but Apple’s Mail Privacy Protection inflates results, so use it for direction rather than precision.
Open rate still matters as an early warning. Klaviyo advises watching for rates above 33% across all industries, so a sudden drop usually signals a deliverability issue before revenue falls .
MAG Growth benchmark:
flow open rates average 55.21% across industries against 43.33% for campaigns. Track the trend instead of the exact number.
Related terms: CTR, deliverability, spam complaint rate.
How Does AOV Impact Email Performance?
Calculate AOV by dividing total revenue by total orders to measure the average amount customers spend per order.
AOV matters because it sets the ceiling on what you can spend to acquire and retain. A higher AOV makes flows like cross-sell and replenishment worth more per send, which changes where you focus first.
Related terms: LTV, revenue per recipient, post-purchase flow.
Here is how the core metrics compare at a glance.
| Metric | Healthy DTC benchmark | What it tells you |
|---|---|---|
|
Revenue per recipient (flow) |
$1.00+, top tier $7.79 |
Real dollar value per send |
|
Click-through rate (flow) |
5.58% average |
Content and offer strength |
|
Open rate (flow) |
55.21% average |
List engagement and deliverability |
Sources for the table above: Klaviyo benchmarks and the Klaviyo Help Center.
We will pull your flow and campaign numbers and tell you exactly where the leak is. No obligation and no pitch until you ask for one.
Klaviyo Flow Terms Explained for DTC Operators
This group drives most automated revenue, so fix it first.
What is the difference between a flow and a campaign?
Use campaigns for one-time sends, and use flows to automate messages triggered by customer behavior.
The gap is significant: campaigns account for 94.7% of sends, but flows generate nearly 41% of email revenue from just 5.3% of sends.
MAG Growth benchmark:
Flows should contribute at least 30% of email revenue. Omnisend’s data across 150,000 brands puts automations at 30% of email revenue from 2% of sends, so if your flows sit under 25% you have money on the table.
Related terms: welcome flow, cart abandonment flow, revenue per recipient.
What flow conversion rate should you target in Klaviyo?
Flow conversion rate is the percentage of people entering a flow who complete a purchase from it. In Klaviyo this shows up as placed order rate, and it is the truest test of whether an automation earns its place.
This number matters because the gap between automated and manual sending is enormous. Across 183,000+ Klaviyo brands, flows post a 2.11% placed order rate against 0.16% for campaigns, a 13x difference.
MAG Growth benchmark:
Treat 2% as the floor for a working flow. Abandoned cart posts the highest placed order rate of any flow at 3.33% average and 7.69% for the top 10%.
Related terms: welcome flow, cart abandonment flow, revenue per recipient.
What Is an Email Welcome Flow?
A welcome flow is the automated series a new subscriber gets right after they sign up. It sets the relationship and often carries your first-purchase offer.
It matters because new buyers convert here. The welcome series drives most first purchases, helping new buyers generate nearly 48% of flow-driven email revenue.
MAG Growth benchmark:
Welcome emails average a 51.26% open rate and a 1.97% placed order rate, with top performers reaching click rates of 15% and placed order rates near 10%. The average welcome email earns $2.35 per recipient, so treat anything under $1 as a rebuild.
Related terms: flow, cart abandonment flow, zero-party data.
How Does a Cart Abandonment Flow Work?
A cart abandonment flow is triggered when someone adds to cart but does not check out. It reminds them and often recovers the sale with a nudge or incentive.
It matters because abandonment is your biggest pool of near-buyers. No other email flow outperforms abandoned cart flows, which average $3.65 per recipient and reach $28.89 among the top 10%.
Expect a 50.5% open rate and a 3.33% placed order rate on average. A single-email cart flow leaves money behind, so build at least three steps and add SMS to the sequence.
Related terms: flow, welcome flow, 10DLC.
How many Klaviyo flows should a DTC brand have?
Six is the working minimum, and strong programs run ten or more. Coverage is the real point, since each uncovered customer action is leaked revenue.
This matters because most brands under-build. Across 150,000 brands and 27 billion emails, automations made up just 2% of sends but drove 30% of email revenue, earning $2.87 per send against $0.18 for scheduled campaigns.
MAG Growth benchmark:
Launch six must-have flows, but build welcome and cart abandonment first because they produce 76% of all automation-generated orders.
Related terms: flow, welcome flow, sunset flow.
Email Deliverability Terms Every Sender Needs to Know
Start with deliverability. Without inbox placement, your other metrics mean little.
What are SPF, DKIM, and DMARC?
SPF, DKIM, and DMARC authenticate your emails through your domain’s DNS and help stop spoofing.
SPF authorizes sending servers, DKIM verifies email integrity with a digital signature, and DMARC tells inbox providers how to handle failed authentication.
Why it matters:
Since February 2024, any sender pushing more than 5,000 messages a day to Gmail or Yahoo must have all three or land in spam.
Related terms: deliverability, spam complaint rate, bulk sender.
What is a good spam complaint rate?
Spam complaints measure how often recipients report your emails as spam and can quickly damage your sender reputation.
This is the single most important compliance number in email. Google and Yahoo set the ceiling at 0.3%, and Google recommends staying under 0.1% for reliable placement.
MAG Growth benchmark:
Klaviyo classes under 0.01% as healthy and flags anything above 0.05% for action. Treat anything approaching 0.3% as an emergency, since at 10,000 sends just 30 complaints hits the ceiling.
Related terms: deliverability, sunset flow, one-click unsubscribe.
Who Qualifies as a Bulk Sender?
A bulk sender is anyone sending more than 5,000 messages to Gmail addresses in a single day. Once you cross that line, the strict authentication rules apply to you.
Most scaling DTC brands are bulk senders and do not realize it. One decent campaign to a mid-size list puts you over the threshold, so the rules are not optional.
Why it matters:
An internal Google Workspace volume can count toward the daily limit too, so the number sneaks up faster than founders expect.
Related terms: SPF DKIM DMARC, spam complaint rate, one-click unsubscribe.
How does one-click unsubscribe work?
One-click unsubscribe is a header that lets recipients opt out with a single tap, no confirmation page. It has been required for bulk senders since 2024.
It matters because a hard-to-find unsubscribe link pushes people to hit “report spam” instead. Making the exit easy actually protects your complaint rate and your inbox placement.
Related terms: spam complaint rate, deliverability, sunset flow.
How Does a Sunset Flow Work?
A sunset flow automatically stops emailing subscribers who have not engaged in a long time. It quietly removes dead weight from your list.
It matters for deliverability, not revenue. Emailing people who never open drives up spam complaints and bounces, so sunsetting them protects the inbox placement of everyone else.
Related terms: spam complaint rate, deliverability, win-back flow.
What Counts as a Healthy Email Unsubscribe Rate?
Unsubscribe rate is the number of people who opt out divided by the emails delivered, measured per campaign. It is direct feedback on whether your content and cadence match what people signed up for.
It matters as an early warning. Klaviyo treats under 0.3% as healthy, 0.3% to 1% as room for improvement, and anything above 1% as needing attention.
MAG Growth benchmark:
Stay under 0.3% per campaign. Watch for spikes rather than the absolute number, since a sudden jump means that specific send hit the wrong audience. An unsubscribe is always better than a spam complaint, so make the exit easy.
Related terms: spam complaint rate, sunset flow, one-click unsubscribe.
What is a good email bounce rate?
Bounce rate is the share of sent emails that fail to deliver. Hard bounces are permanent, like an address that does not exist, while soft bounces are temporary, like a full inbox.
It matters because bounces get you throttled faster than a weak open rate. Klaviyo flags a bounce rate above 2% as needing attention, since high or rising bounces point to a list hygiene or sender reputation problem.
MAG Growth benchmark:
Keep bounce under 1% per send, which Klaviyo classes as healthy. Klaviyo auto-suppresses hard bounces, so a rising rate usually means a bad acquisition source.
Related terms: deliverability, spam complaint rate, sunset flow.
SMS Compliance Terms for Shopify and DTC Brands
SMS is a high-ROI channel with real legal teeth. Get the compliance wrong and carriers simply block you.
What does 10DLC mean for ecommerce?
10DLC stands for 10-digit long code, the standard business phone number carriers approved for application-to-person texting. It is the registration system US carriers use to vet business SMS senders.
It matters because it is now mandatory. Since February 1, 2025, US carriers block all text traffic from unregistered numbers, so an unregistered brand simply does not get delivered.
MAG Growth benchmark:
budget roughly $4 to $15 upfront plus about $10 per month per campaign, and expect brand approval in 2 to 5 business days.
Related terms: A2P messaging, TCPA, SHAFT.
What is 10DLC registration for Shopify sellers?
For a Shopify brand, 10DLC registration is the process of registering your business and your SMS campaign with The Campaign Registry before you send texts. Your SMS platform usually walks you through it.
You will need your legal business name, EIN, website, privacy policy, opt-in language, and sample messages. Registered traffic gets 99%+ deliverability, so it is worth doing right the first time.
Why it matters:
A free email domain or missing privacy policy gets your registration rejected, which delays your entire SMS launch.
Related terms: 10DLC, A2P messaging, opt-in.
What is A2P messaging?
A2P means application-to-person, any text sent from a software platform to an individual. Nearly all marketing and automated SMS is A2P, which is why it falls under carrier rules.
Carriers treat every business text as A2P, even a customer-service reply or order update. That is why you cannot skip 10DLC by claiming your texts are “just service messages.”
Related terms: 10DLC, TCPA, SHAFT.
What is the TCPA and how does it affect SMS?
The TCPA is the federal Telephone Consumer Protection Act. It requires prior written consent before any marketing text and carries penalties of $500 to $1,500 per violation.
It matters because the risk is scaling fast. TCPA class action filings rose nearly 95% year over year through mid-2025, so a sloppy opt-in process is real legal exposure.
MAG Growth benchmark:
Honor STOP replies instantly and only text between 8am and 9pm in the recipient’s local time.
Related terms: 10DLC, opt-in, SHAFT.
What does SHAFT mean in SMS marketing?
SHAFT stands for Sex, Hate, Alcohol, Firearms, and Tobacco. Carriers prohibit SMS content in these SHAFT categories, and violating it can get your campaign shut down.
It matters for brands in gray areas. If you sell supplements, CBD, or anything adjacent to these categories, your message templates need review before you register.
Related terms: 10DLC, TCPA, A2P messaging.
What is a good SMS opt-out rate?
SMS opt-out rate is the share of recipients who reply STOP or otherwise cancel after a text. It is the SMS version of an unsubscribe, and it matters more because SMS costs more to send than email.
Watch it closely because a high opt-out rate burns an expensive channel fast. The usual cause is frequency, so reserving texts for launches and genuinely urgent sales keeps the rate down.
MAG Growth benchmark:
Keep opt-outs under 1% per campaign. If a single send spikes above that, the message went to the wrong segment, or you are texting too often.
Related terms: 10DLC, opt-in, preference center.
Here is how the main SMS compliance pieces fit together.
| Compliance layer | What it governs | Penalty for ignoring it |
|---|---|---|
|
10DLC registration |
Carrier-approved sending |
Messages blocked entirely |
|
TCPA |
Consent before texting |
$500 to $1,500 per violation |
|
SHAFT rules |
Prohibited content |
Campaign suspension |
Email and SMS Metrics Every DTC Brand Should Track
This is the newest cluster and the one most founders get wrong. As tracking gets harder, data customers hand you directly becomes your edge.
What is zero-party data in email marketing?
Zero-party data is information a customer intentionally and proactively shares with your brand. The term was coined by Forrester Research to describe preferences, purchase intentions, and personal context given freely.
It matters because it is the most accurate data you can own. First-party data tells you what a customer did, while zero-party data tells you what they actually want, which makes your flows far more relevant.
Why it matters:
with third-party cookies phasing out, data customers volunteer is both privacy-safe and yours to keep. Brands transparent about data use see meaningfully higher consumer trust.
Related terms: first-party data, preference center, quiz funnel.
What is the difference between zero-party and first-party data?
First-party data is collected by observing behavior on your own channels, like page views, purchases, and email clicks. Zero-party data is volunteered directly, like a survey answer or a stated preference.
The distinction matters for personalization. Behavior can be misread, but a stated preference cannot, so zero-party data removes the guesswork from segmentation.
Why it matters:
if you can only invest in one, zero-party data starts producing usable segments immediately while first-party datasets take time to build.
Related terms: zero-party data, preference center, quiz funnel.
What are zero-party data collection methods?
These are the tools you use to ask customers for information directly. The most common are quizzes, surveys, preference centers, and post-purchase questions.
They matter because the method shapes the data quality. A well-built quiz can capture intent at signup and feed it straight into a segmented welcome flow, so the collection point and the flow work together.
Common collection methods include:
- Product recommendation quizzes at signup
- Preference centers in the email footer
- Post-purchase survey questions
- Interactive polls in campaigns
Related terms: preference center, quiz funnel, welcome flow.
What is a preference center?
A preference center is a page where subscribers choose what they hear about and how often. It captures zero-party data while giving people control over their inbox.
It matters for two reasons at once. It lowers unsubscribes and spam complaints by letting people dial down instead of opting out, and it feeds you preference data you can segment on.
Related terms: zero-party data, one-click unsubscribe, spam complaint rate.
How to Read Your Benchmarks Without Panicking
A benchmark is a starting line, not a verdict. Your vertical, price point, and list age all move these numbers, so use them to spot direction rather than to grade yourself.
The pattern across every term here is the same. Flows beat campaigns, deliverability underpins everything, compliance is now mandatory, and volunteered data beats tracked data. Fix those four things in order and your program compounds.
If your numbers are off and you cannot tell why, that is usually a structural problem, not an effort problem. That is the exact gap we close for brands doing $1M to $10M.
DTC Email and SMS Glossary FAQs
What is a good revenue per recipient benchmark for DTC email?
A healthy flow should clear $1.00 per recipient, and top performers reach as high as $7.79. Campaigns run far lower because they go to your whole list rather than a triggered segment, which is why flow RPR runs roughly 18 times higher.
What email spam complaint rate threshold do Gmail and Yahoo enforce?
Both cap it at 0.3%, and Google advises staying under 0.1% for reliable inbox placement. At that ceiling, only 30 complaints on 10,000 sends puts you in enforcement territory.
Do I need 10DLC registration for Shopify SMS?
Yes. Since February 1, 2025, US carriers block all texts from unregistered numbers, so any Shopify brand texting US customers must register its brand and campaign first.
What share of email revenue should come from flows versus campaigns?
Flows should drive at least 30% of email revenue despite being a tiny fraction of sends. Klaviyo data shows flows generate about 41% of email revenue from just 5.3% of volume, while Omnisend puts automations at 30% of revenue from 2% of sends.
Is zero-party data the same as first-party data?
No. Zero-party data is volunteered directly by the customer, while first-party data is observed from their behavior on your channels. Zero-party data is more accurate for personalization because it captures stated intent, not guessed intent.
Should I manage Klaviyo in-house or hire an agency?
It depends on your time and your team’s depth. In-house gives you control but eats your hours, while an agency brings specialists who have already fixed the exact flow and deliverability problems above across hundreds of accounts.
Most brands doing $1M to $10M scale faster handing daily execution to a partner, then reviewing the numbers against these benchmarks.
What should I look for in a DTC email and SMS agency?
Look for a team that reports on revenue per recipient and flow contribution, not just how the emails look. The right partner ties every send to a benchmark and shows you where revenue is leaking before they pitch you anything.
Your benchmarks just told you where money is escaping. We will audit your flows, deliverability, and compliance, then show you the three fixes that move revenue first.