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Apollo
Apollo
A U.S. based legal education and travel company had a severely damaged email program — campaigns were blasted to hundreds of thousands of contacts with no domain warm-up, broken authentication, and copy that consistently landed in spam. INSIDEA rebuilt the entire infrastructure from the ground up: retiring the compromised primary domain, setting up alias domains with full SPF, DKIM, and DMARC authentication, and replacing one-shot blasts with structured cold and warm email sequences. Over 51 weeks, open rates climbed from under 18% to 28-35%, click rates rose from below 1% to as high as 10.5%, and weekly event signups increased more than 15x, without increasing advertising spend.
| Metric | Before | After |
|---|---|---|
| Open Rate | 10-18% | 28-35% |
| Click Rate | Under 1% | Up to 10.5% |
| Replies | 0 | 25+/month |
| Weekly Signups | 2 | 15+ |
A U.S.-based company offering accredited legal education events in international and domestic destinations needed to fix a broken outbound email program and build a sustainable acquisition engine capable of consistently driving event registrations from legal professionals.
By the time INSIDEA was engaged, the client’s email program had effectively stopped working. Years of high-volume blasting to large contact lists without proper domain warm-up had destroyed sender reputation, and emails were landing in spam before they reached any inbox. The underlying technical configuration was broken – SPF, DKIM, and DMARC records were either missing or misconfigured, and the primary domain had accumulated enough negative history that it could no longer be trusted for outbound use. There was no sequencing, no nurturing, no personalization strategy: just periodic blasts that generated no replies and almost no engagement.
INSIDEA rebuilt the entire outbound email program from the ground up. Rather than patching individual problems, the approach addressed the full stack: retiring the damaged primary domain, standing up properly authenticated alias domains, warming them with structured sequences, redesigning the copy and campaign architecture, and integrating automation tools to ensure cold and warm leads were handled through separate, purpose-built workflows. Every decision was made to compound over time, building a channel that would become more effective with each passing week.
Over 51 weeks, INSIDEA transformed a broken outbound email program into a reliable acquisition engine. The primary domain was retired, alias domains were set up with full SPF, DKIM, and DMARC authentication, and structured warm-up sequences were run before any campaigns went live. Cold and warm outreach were separated into dedicated workflows – each with its own tooling, copy strategy, and success metrics; ensuring no lead was handled with a one-size-fits-all approach.
The results compounded steadily from Q1 through Q4. Open rates climbed from under 18% to as high as 29.40%, click rates grew from below 1% to 7.30% by Q4, and qualified replies went from zero to 25 or more per month. Weekly event signups increased more than 15x – and paid registrations continued to grow without a single dollar of additional advertising spend.
"Before working with INSIDEA, our emails were disappearing into spam and we had almost no idea why. They came in, diagnosed every layer of the problem, and rebuilt everything we had from scratch. Within a few months, we were getting real replies from our audience for the first time. The growth in signups has been remarkable and it has changed how we think about email as a channel entirely. "
The email infrastructure and strategy INSIDEA deployed here is directly applicable to any organization that relies on outbound email to generate leads, registrations, or sales conversations — and is not getting the results their list size should produce. If any of the following describe your situation, this approach is built for you.
High-volume sending to large contact lists without domain warm-up is one of the most common causes of deliverability failure. Email providers assess sender reputation based on engagement signals and authentication records. When a domain sends at high volume without a proper warm-up period and without SPF, DKIM, and DMARC correctly configured, spam filters treat outbound mail as suspicious, regardless of list size. Rebuilding from a properly authenticated alias domain with a structured warm-up sequence is the correct fix.
Domain warm-up is the process of gradually increasing sending volume from a new domain over several weeks so that email providers recognize it as a legitimate, trustworthy sender.
Cold email targets contacts who have not previously engaged with your brand, with the goal of generating an initial reply or expression of interest. Warm email nurturing is designed for contacts who have already shown some level of engagement – an open, a click, a form submission and moves them progressively toward a conversion. Treating these two audiences with the same campaigns, tools, and copy is a common mistake that undermines both programs. They require different platforms, different messaging approaches, and different success metrics.
Recovery timelines depend on how severely the primary domain’s reputation has been affected. In cases where the primary domain is beyond repair, retiring it from outbound use and rebuilding on properly authenticated alias domains is often faster than attempting rehabilitation. In this engagement, meaningful open and click rate improvements were visible within the first quarter, with the program reaching full performance by week 30 of a 51-week engagement.
Yes. A well-structured outbound email program; built on clean infrastructure, relevant copy, and sequenced follow-up can generate a consistent and scalable registration pipeline without paid media. In this engagement, the client saw weekly event signups increase more than 15x over 51 weeks, with paid event registrations growing steadily and no corresponding increase in advertising spend. Email, when built correctly, is one of the highest-ROI acquisition channels available.
See how INSIDEA rebuilds broken email programs into consistent, high-performing acquisition engines, without increasing your ad spend.
