email marketing agency

Email & SMS Marketing

The channel with 40x ROI, done properly

Email is still the highest-ROI channel in marketing - when it's done properly. Most programs are broadcast blasts that burn the list. We build lifecycle programs, deliverability infrastructure, and campaign calendars that treat every subscriber like a relationship, not a metric.

Deliverables
4 core deliverables
Timeline
3-5 weeks to first flows live, weekly rhythm from week 4
Pricing
Retainers from $3,500/mo · platform fees pass-through
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What's included

  • Deliverability audit + DNS/DKIM/DMARC setup
  • List segmentation and hygiene program
  • Full lifecycle flow library (welcome, nurture, cart, winback)
  • Weekly/biweekly campaign calendar
  • Copy + design for every send
  • Reporting on revenue per subscriber

What ships

  • Deliverability setup + monitoring
  • 8-15 lifecycle flows built and tuned
  • Monthly campaign calendar + creative production
  • Revenue-per-subscriber dashboard

What you walk away with

  • 25-45% of total revenue attributable to email/SMS
  • Inbox placement above 95%
  • A list that grows in value, not just in size

Ecommerce and service clients on our program average $40-$90 in revenue per active subscriber per year - 2-4x industry benchmark - because the strategy respects the relationship instead of exhausting it.

Why most email programs quietly die

Most programs start well and rot slowly. The founder or CMO sends a great launch email, subscribers open it, revenue looks strong. Then someone starts sending twice a week to keep numbers up, unsubscribes climb, sender reputation slips, and within a year deliverability is broken and revenue-per-email is a fraction of what it was.

The fix is discipline. Send less to unengaged segments, send more to hot ones, treat the list like a customer base - not an audience - and monitor deliverability the way an ops team monitors uptime.

How we run the program

The engine is lifecycle flows: welcome, browse-abandon, cart-abandon, post-purchase, replenishment, winback. These run in the background and account for 40-60% of program revenue because they hit at the exact moment of intent.

On top of the flows, we run a weekly or biweekly campaign calendar: promotions, content, storytelling, launches. Each send is briefed with a specific audience segment, a specific goal, and a specific control against which we measure lift.

Deliverability is the whole game

You can have the best copy in the world and land in spam. We treat deliverability as first-class engineering: SPF, DKIM, DMARC configured properly; dedicated IP or shared, whichever fits volume; engagement-based segmentation so we're only sending to people who actually open.

The reporting shows placement by ISP, not just open rate - because open rate lies (Apple MPP) and inbox placement tells the truth. If Gmail starts sending you to Promotions, we know within 48 hours and course-correct.

See if we're a fit

Get a personalized Email & SMS Marketing plan

Answer 6 quick questions. If we're a fit, we'll show you exactly how email & sms marketing would run inside your business and book your Growth Audit.

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See real email & sms marketing results

Every engagement is measured. Browse our case studies for real outcomes from businesses that installed email & sms marketing with us.

View case studies

Frequently asked

What platforms?
Klaviyo (ecommerce), HubSpot, Customer.io, Iterable, and Attentive/Postscript for SMS. We migrate between platforms when the stack is holding the program back.
Can you fix deliverability problems?
Yes - deliverability triage is a specialty. Domain warmup, list scrubbing, engagement segmentation, and authentication cleanup.
Is SMS worth the extra cost?
Almost always. SMS gets 5-10x the open rate of email - but only if you treat it with restraint. Our programs coordinate the two so you never wear out the channel.

Pair with

Growth Strategy
The plan that makes every other dollar work harder
Websites & Sales Funnels
Sites that convert traffic into booked calls - not bounces
Paid Advertising
Profitable traffic on Meta, Google, TikTok, and YouTube
CRM & Workflow Automation
Every lead followed up. Every deal moved. Every time.
AI Chat & Voice Agents
A senior closer answering every lead, day or night
SEO & AEO
Show up when buyers ask Google - and when they ask ChatGPT
See all services →
Written and reviewed by
Chris Sanford, Founder & Chief Growth Strategist

Chris builds and leads the email & sms marketing engagements at Irrefutable Momentum. Read more →

Ready to install email & sms marketing?

Book a 30-minute Growth Audit. If we're a fit we'll show you exactly how the system would run inside your business.

Book a Growth Audit