How Email Marketing Drives Revenue and Customer Retention for Your Business

Most businesses underinvest in email relative to what it’s capable of producing. The list they’ve built over years — customers, leads, past buyers — sits largely untouched while the marketing budget goes toward paid channels that cost more per conversion and stop working the moment the spend stops. Email is the channel that compounds. A well-built automation running in the background generates revenue every day without incremental effort or ad spend.

At THAT Agency, email marketing means three things working together: a strategy built around your customer journey and buying cycle, automation sequences that nurture leads and retain customers based on behavior rather than schedule, and segmentation that sends the right message to the right contact rather than blasting the entire list with the same email. We manage everything from platform setup and deliverability infrastructure through campaign creation, workflow builds, and monthly performance reporting.

You own your data, you see exactly what your email program is producing, and our reporting connects email performance directly to revenue — not just open rates and click counts that look good in a dashboard but don’t tell you whether email is actually working.

What Our Email Marketing Services Include

Six areas of work built to turn your list into a consistent, measurable revenue channel.

THAT Agency handles every part of email marketing, from audit and strategy through list growth, design, automation, deliverability, and ongoing performance optimization.

Email Strategy & Planning

Before any campaign gets built, we establish the strategic foundation. That means auditing your current list and existing sends, defining goals and KPIs tied to revenue rather than engagement vanity metrics, mapping out the customer journey and identifying where email should be doing work it currently isn’t, and building a campaign and automation calendar aligned with your offers and buying cycle. Compliance guidance around CAN-SPAM and GDPR is included, coordinated with your legal team where applicable.

Goal:Diagnose what’s actually broken, identify the biggest opportunities, and build a strategy tied to revenue math..

Email Campaign Management

We plan, design, write, build, and deploy ongoing campaigns — newsletters, promotional sends, product announcements, and seasonal campaigns. Every campaign is written for a specific audience segment rather than the full list, designed mobile-first, and tested across major email clients and devices before it goes out. Call-to-action strategy is built around a single primary action per send — not a campaign trying to do six things at once.

Email Automation & Workflows

Automation is where email produces the most revenue with the least ongoing effort. We build the workflows that run continuously in the background: welcome and onboarding series for new subscribers, lead nurture sequences triggered by form fills or content downloads, abandoned cart and browse abandonment flows for eCommerce, post-purchase and upsell campaigns, and re-engagement sequences for contacts who’ve gone inactive. Workflows are built around actual behavior triggers — not arbitrary time delays — and tested before they go live.

Goal:Build automation that runs itself, and that captures revenue your manual campaigns can’t.

Segmentation & Personalization

Sending the same email to your entire list is the fastest way to degrade list health and suppress engagement. We segment based on purchase behavior and order value, engagement level and recency, lifecycle stage and funnel position, demographics and location, and industry or service-specific attributes where relevant. Personalization goes beyond first-name tokens — it means tailoring offers, messaging, and content to what each segment actually cares about.

List Management & Deliverability

Deliverability is the unglamorous foundation everything else depends on. We manage authentication setup — SPF, DKIM, and DMARC — sender reputation monitoring, list hygiene and removal of inactive or invalid contacts, permission-based list growth through optimized signup forms and lead magnets, and suppression list management. An email that doesn’t land in the inbox doesn’t produce revenue regardless of how good the copy is. We treat deliverability as a core part of the program, not an afterthought.

Performance Tracking & Optimization

We track open rate, click-through rate, click-to-open rate, conversion rate, revenue per send, revenue per subscriber, list growth, workflow performance, and attribution to revenue. Leading indicators tell us how emails are performing. Revenue metrics tell us whether the program is working for your business. Monthly reporting connects both, with direct access to your data and account managers who explain what the numbers mean and what’s being adjusted.

How Our Email Marketing Process Works

Step 1. Strategy and Setup

We start with a full audit of your current email program — existing sends, automation status, list health, deliverability infrastructure, and platform configuration. From that we build a prioritized roadmap: what needs to be fixed immediately, what automations to build first, and what campaign cadence makes sense for your audience and business model. Platform evaluation and configuration, list organization, and reporting structure are all established before anything launches.

Step 2. Campaigns, Workflows, and Optimization

We launch campaigns and automations on a defined schedule, with A/B testing built into the process from day one. Subject lines, content, CTAs, send times, and audience segments are all tested systematically rather than on instinct. Ongoing segmentation refinement and message optimization happen monthly based on what the performance data shows.

Step 3. Reporting and Growth

Monthly performance reports tie email activity directly to revenue and key business metrics. Strategic reviews identify new automation opportunities, segments worth developing, and campaigns worth scaling. As the program matures, the focus shifts from fixing what’s broken to scaling what’s working — expanding automations, deepening personalization, and integrating email more tightly with your other marketing channels.

Why Choose THAT Agency for Email Marketing

Most email marketing agencies fail in predictable ways. They send too much, too generically, to lists that haven’t been cleaned in years, and watch deliverability quietly tank for the entire program. They set up the basics (welcome series, abandoned cart) and call it automation. They skip the technical fundamentals, authentication, list hygiene, engagement-based sending, because nobody asks about them. We’ve watched programs lose 40% of their revenue to deliverability problems nobody at the agency could explain.

Three things set us apart:

  • We measure email by revenue contribution. Not opens, not clicks, not list growth. If a flow or campaign isn’t moving revenue, we don’t keep doing it, even when the engagement metrics look fine.
  • We treat deliverability as a primary deliverable. Authentication setup, list hygiene, engagement signals, and sender reputation are not afterthoughts. They are the channel. Most agencies skip them, and their programs quietly underperform forever.
  • We integrate email with the rest of your marketing, paid, SEO, content, CRM. Audiences feed each other. Campaigns reinforce each other. Email isn’t a silo; it’s a node in the system.

The result: an email program that lands in the inbox, drives revenue you can attribute, and protects the long-term health of your sender reputation.

Frequently Asked Questions About Our Email Marketing Services

Your Email Marketing Questions Answered

Have questions about email marketing strategy, automation, or list growth? Here are answers to the most common questions businesses ask when partnering with an email marketing agency.

What does an email marketing agency actually do?

An email marketing agency builds and executes programs that drive revenue, retention, and customer lifetime value through email. At THAT Agency, that includes email strategy and audit, list growth and lead capture, template design and copywriting, automation setup and management, deliverability and authentication, segmentation, A/B testing, performance analytics, and platform management. We handle every part of email, from initial audit to ongoing campaign execution and continuous optimization.

What’s the actual ROI of email marketing?

Email marketing delivers $36 for every $1 spent on average (DMA, 2024), the highest ROI of any digital marketing channel. Well-optimized programs return $50–$70 per dollar. ROI varies by industry: ecommerce typically sees the highest direct revenue contribution (often 25–40% of total revenue from email), while B2B and professional services see ROI through pipeline acceleration and customer retention rather than direct sales.

How often should I send emails?

Frequency depends on your list quality, content quality, and audience expectations. For ecommerce: 2–4 sends per week is often optimal when balanced with strong segmentation. For B2B: 1–2 sends per week with high value drives engagement without fatigue. For professional services: 1–2 sends per month plus triggered automation often works best. The key is consistency and value, high-frequency batch-and-blast destroys deliverability; well-segmented quality at lower frequency outperforms it consistently.

Why is email deliverability such a big deal?

Because emails that land in spam don’t generate revenue. Period. In 2024, Gmail and Yahoo introduced stricter authentication requirements (mandatory SPF, DKIM, DMARC, and one-click unsubscribe for bulk senders). Programs that ignored those requirements saw measurable deliverability drops. Most accounts we audit have at least one significant deliverability issue, broken authentication, poor list hygiene, or sending patterns that hurt sender reputation. Fixing deliverability often delivers 20–40% revenue increases on its own.

What email marketing platforms do you work with?

Every major ESP. Klaviyo for ecommerce. HubSpot for B2B. Mailchimp and Constant Contact for SMB. ActiveCampaign for sophisticated automation. Salesforce Marketing Cloud and Iterable for enterprise. Customer.io for product-led growth. Marketo and Pardot for B2B marketing automation. Platform recommendations depend on your business model, list size, automation complexity, and integration requirements. We don’t push you onto a platform, we help you choose the right one.

How do you grow my email list?

Multi-channel list growth, and a focus on quality over quantity. High-value lead magnets (guides, templates, calculators), conversion-optimized pop-ups and on-site forms, exit-intent capture, paid social and search campaigns driving to opt-in offers, content marketing with embedded capture, webinar registrations, post-purchase opt-in. Equally important: continuous list hygiene. A list of 5,000 engaged subscribers outperforms 50,000 unengaged ones every time, and protects your sender reputation.

What automation flows do you set up?

Core flows for every relevant client include: welcome series (converting new subscribers), abandoned cart and browse abandonment (for ecommerce), lead nurture sequences (for B2B), post-purchase flows (onboarding, cross-sell, review request, replenishment), re-engagement and sunset campaigns, and behavioral triggers (page-view, content-engagement, browse abandonment). Beyond core flows, we build custom automation tied to your specific business logic, lifecycle stages, product categories, customer segments.

Can email marketing work for B2B?

Yes, email is often the highest-ROI B2B marketing channel when executed properly. The strategy looks different from ecommerce: less promotional, more value-driven, with sophisticated nurture sequences tied to lead scoring and sales handoff. We build B2B programs around content nurture, account-based marketing (ABM), event-based engagement, sales sequence support, and customer expansion. In a long-cycle B2B sale, email is where the trust between touchpoints actually gets built.

How much does email marketing cost?

Email marketing costs typically break into three components: platform fees (your ESP, varies by list size and features), agency management fees (strategy, execution, optimization), and creative production (design and copywriting). Email is generally the most cost-effective marketing channel, even mid-sized programs often pay for themselves within the first quarter. Request a proposal and we’ll send a customized recommendation tied to your business goals.

How is THAT Agency different from other email marketing agencies?

Three things. We measure email by revenue contribution, not opens, we’ll tell you when sending more emails would hurt your program, even if it shrinks our send volume. We treat email as part of your full marketing stack, integrating with paid, SEO, content, and CRM so every channel reinforces the others. And we’re deeply technical on deliverability and authentication, which is where most agencies fall down, especially after the 2024 Gmail and Yahoo changes.

Email Marketing Results from Real Clients

Outcomes from actual email programs tied to revenue and customer retention.

LaBovick Law Group

Generated 25,000+ social engagements and 7,700+ website visits through an integrated social and inbound strategy.

Better Outcomes Now

Increased social impressions by 1,080% through integrated digital marketing and content strategy.

Keller William Commercial Real Estate

Increased total website traffic by 1,336% through a full-funnel digital marketing strategy.