The fastest way to understand how email and SMS marketing actually works in practice is to walk through a real rebuild from start to finish. What follows is a composite, illustrative walkthrough drawn from the pattern we see repeatedly with local service clients at Salterra Digital Services — not a single named account, but a representative sequence showing exactly how a stalled program gets diagnosed and rebuilt, step by step.
The scenario: a regional home services company with an email list of several thousand past customers and leads, a Mailchimp account nobody had touched meaningfully in over a year, and no SMS program at all. The list existed. It just was not doing anything.
Step One: Diagnose Before Touching Anything
Before sending a single campaign, the first move is always a full audit — not a guess. That means pulling the platform’s engagement report and segmenting the list by activity: who opened or clicked in the last 90 days, who has been silent for six months to a year, and who has been dead for over a year. In a stalled account like this, it is common to find that 60-70% of the list falls into the “dead” bucket — addresses that will never open again and are actively hurting deliverability just by sitting there.
The audit also checks technical fundamentals that non-specialists routinely skip: is SPF, DKIM, and DMARC properly configured on the sending domain? What does the current sender reputation look like? Is the list double opt-in or single opt-in, and how was it originally collected? In this walkthrough, DKIM was missing entirely — a technical gap that alone was suppressing inbox placement regardless of how good the content was.
Step Two: Clean the List Before Sending Anything New
The instinct to “just start emailing again” is the single most common mistake at this stage. Sending a fresh campaign to a list that is 60% dead weight tanks the open rate immediately, which damages sender reputation with mailbox providers and makes every subsequent send harder to deliver — a downward spiral.
The correct sequence is:
- Suppress hard bounces and any address that has bounced repeatedly.
- Segment out the long-dormant contacts (12+ months with zero engagement) into a separate re-engagement track rather than the main sending list.
- Fix the authentication records (SPF, DKIM, DMARC) before any volume increase.
- Start with a small, engaged core segment to rebuild sender reputation gradually rather than blasting the full list on day one.
Step Three: The Re-Engagement Sequence
Rather than deleting the dormant segment outright — which throws away contacts who may simply have been ignored rather than uninterested — the walkthrough used a short three-touch re-engagement sequence sent only to that segment, isolated from the healthy list:
- Touch one — a short, direct email acknowledging the gap: “It’s been a while — here’s what’s new,” with one clear, low-friction call to action.
- Touch two (sent four days later, only to non-openers) — a different subject line and angle, often a seasonal offer or a reminder of a service the customer previously used.
- Touch three (sent one week after that) — a final “should we keep you on the list?” message that lets the recipient confirm interest with one click or be automatically removed.
Anyone who did not engage across all three touches was suppressed from future sends entirely. This is the step agencies most often skip because it feels counterintuitive to shrink the list further. But a smaller, engaged list consistently outperforms a larger, stale one on every downstream metric, and it protects deliverability for every future campaign.
Step Four: Rebuilding the Automation Backbone
With the list cleaned, attention shifted to the automations that should have existed from day one:
- A welcome sequence for new leads, introducing the business, setting expectations for response time, and offering a clear next step.
- A post-service follow-up triggered automatically a few days after job completion, requesting a review and flagging any issues before they became public complaints.
- A seasonal maintenance reminder flow, since the business’s core services were seasonal — this alone became the highest-converting automation in the rebuild, because it reached customers at the exact moment they were likely to need service again.
Step Five: Layering In SMS
SMS was introduced only after the email foundation was stable, and only for use cases where speed mattered: appointment confirmations, day-of reminders, and a two-way line for rescheduling. The business registered its sending number properly (10DLC registration in the U.S.), built an explicit opt-in checkbox into the booking form with clear consent language, and kept SMS volume deliberately low — a handful of transactional-style messages per customer relationship, never promotional blasts to the full list.
This restraint mattered. SMS earns trust or destroys it fast. A customer who opted in for appointment reminders and instead receives frequent promotional texts will opt out immediately and may report the number as spam, which can get it blocked by carriers. The walkthrough treated SMS as a precision tool, not a volume channel.
Step Six: Measuring the Turnaround
Results were tracked against the pre-rebuild baseline, not against generic industry benchmarks, because the starting point (a neglected, largely dead list) made outside benchmarks meaningless. The metrics that mattered:
- Inbox placement and sender reputation score, checked via the platform’s deliverability tools rather than assumed.
- Engagement rate on the cleaned, active segment compared to the blended rate on the old, unsegmented list.
- Review volume following the new post-service automation, since reviews were a stated business goal.
- Appointment no-show rate before and after SMS reminders were introduced.
The pattern held true to what we see across most stalled-list rebuilds: engagement on the cleaned segment improved substantially versus the blended pre-rebuild average, no-shows dropped meaningfully once SMS reminders were in place, and review volume increased as the automated follow-up removed the dependency on staff remembering to ask.
What Made This Rebuild Work
Nothing in this walkthrough involved a clever subject line trick or a growth hack. The turnaround came from sequencing: fix the technical foundation first, clean before sending, re-engage before deleting, automate the predictable touchpoints, and introduce SMS only where speed genuinely mattered. Skipping any one of those steps — especially the list cleaning — is the most common reason similar rebuilds fail to stick.
Frequently Asked Questions
How long does a stalled email list rebuild typically take to show results?
Technical fixes (authentication records) can improve deliverability within days. List cleaning and re-engagement sequencing usually take two to four weeks to fully play out. Automation impact, like reduced no-shows or increased reviews, typically becomes measurable within one to two months as enough customers move through the new flows.
Is it ever better to delete a dormant list and start over instead of re-engaging it?
Rarely, if the list was collected with proper consent. A structured re-engagement sequence usually recovers a meaningful portion of dormant contacts at very low cost, and only after that sequence fails to engage someone should they be suppressed or removed.
Why does SMS require more restraint than email in a rebuild like this?
Text messages interrupt in a way email does not — most people carry their phone on them constantly. Overusing SMS for promotional content burns opt-ins fast and risks carrier filtering or complaint reports, so it works best reserved for time-sensitive, expected communication like reminders and confirmations.
What technical checks should happen before any list rebuild begins?
Verify SPF, DKIM, and DMARC records are correctly configured on the sending domain, check current sender reputation through the platform's deliverability dashboard, and confirm how the list was originally collected and whether consent records exist.
Does a list cleaning process risk losing good customers who were simply busy, not disinterested?
A well-built re-engagement sequence is designed to catch exactly those customers before removal — giving them multiple chances across different angles and a final explicit opt-back-in step, rather than silently dropping anyone who has not opened recently.
Terry has 30+ years in software and SEO. He’s the founder of Salterra Digital Services and SEO Spring Training, host of the Roundtable SEO Mastermind, and lead instructor at SEO University — teaching the exact tactics his team uses on client work.
Continue learning
Ready to master this?
This guide is one lesson from the Email SMS – GHL course. Get every lesson, framework and checklist — plus the full 38-course catalog — inside SEO University.
Practitioner-focused training across the full digital marketing stack — from technical SEO to conversion optimization and the AI search era. By Salterra Digital Services, since 2011.