Latest / Marketing Automation with Fexingo: HubSpot, Marketo, and Automated Customer Journeys / How Email Deliverability Ruins Your Automation ROI
Transcript
- Lucas: So you've built this beautiful ten-step nurture sequence. Triggers are set, content is segmented, timing is perfect. And then it just… underperforms. Low open rates, even lower click-through. And everyone on the team starts blaming the copy. Luna: Right. The 'we need better subject lines' conversation. And sometimes that's true. But more often than not, the real problem is that the emails never made it to the inbox in the first place. Lucas: Exactly. Email deliverability. It's the most overlooked variable in marketing automation ROI. And I think it's because it feels technical — like an IT problem, not a marketing problem. But it's a marketing problem with a very direct dollar impact. Luna: We saw this recently with a B2B SaaS client. They had a five-step lead-nurture workflow running on HubSpot. Looked great on paper. But their deliverability rate was hovering around 96 percent. Lucas: And 96 percent sounds good, right? I mean, that's an A minus. Luna: It does. But when you're sending 50,000 emails a month, 4 percent means 2,000 emails never arrive. And those 2,000 are disproportionately your most engaged contacts — the ones who opened the last three emails, clicked a link, visited your pricing page. The algorithm flags them as 'risky' because their engagement pattern looks bot-like to some filters. Lucas: So your best leads are the ones getting silently filtered out. And because they never received the email, they never click. And because they never click, your CRM tells you they're 'cold' and drops them from the sequence. The system literally punishes the people most likely to buy. Luna: Exactly. That's the hidden cost. It's not just the lost opens — it's the corrupted lead scoring. Your automation thinks those leads are disengaged, so they get deprioritized or even purged. Lucas: And that's how a 4 percent bounce rate can quietly destroy tens of thousands of dollars in pipeline without anyone noticing. Because the campaign dashboard shows 'sent: 50,000' and the CRM shows no activity, and everyone assumes the content just didn't resonate. The post-mortem blames the offer, not the infrastructure. Luna: Let's get specific about what causes it. There are really three big buckets: sender reputation, authentication, and list hygiene. And most marketers only think about the third one. Lucas: Sender reputation is like a credit score for your sending domain. Internet service providers — Google, Microsoft, Yahoo — they all track it. If you suddenly spike your volume, or if you get a lot of spam complaints, your score drops. And once it drops, even your best emails start landing in promotions or spam. Luna: And the scary part is, it's cumulative. A bad send on Tuesday affects Thursday's deliverability. So one mistake — like accidentally re-sending to a stale list — can tank your performance for weeks. Lucas: That's where authentication protocols come in. DKIM and DMARC. These are technical standards that prove to the receiving server that your email is really from you. If you don't have them set up correctly, or if your SPF record is misconfigured, your emails are much more likely to be flagged as suspicious. Luna: And this is something I see all the time in audits. Companies move from one email platform to another — say, from Marketo to HubSpot — and they forget to update their DNS records. So the old DKIM key is pointing to a server they don't use anymore. Their emails still send, but deliverability drops by 10 or 15 percent overnight. Lucas: Which brings us to list hygiene. This one everyone knows about, but almost nobody does well. I mean, how often do you actually scrub inactive subscribers? Not just unsubscribes — I mean people who haven't opened in six months. Luna: Quarterly, if you're good. Annually, if you're typical. And the problem is, those stale addresses turn into hard bounces over time. And a high hard-bounce rate is one of the fastest ways to wreck your sender reputation. Lucas: Let me give listeners a concrete benchmark. To maintain a healthy sender reputation, you want your hard bounce rate below 2 percent. Ideally below 1 percent. And your spam complaint rate should be under 0.1 percent — that's one complaint per thousand sends. Anything above that and Gmail starts routing you to spam automatically. Luna: And those are numbers most marketing dashboards don't show prominently. They show you open rate, click rate, maybe bounce rate. But they bury sender score or inbox placement rate in a separate report. You have to go looking for it. Lucas: Which is crazy, because inbox placement rate is arguably the most important metric in email marketing automation. If your email doesn't land in the primary inbox, nothing else matters. You could have the best copy in the world, the most personalized offer, a perfect send time — and it's completely wasted. Luna: I want to go back to that B2B client I mentioned. After we fixed their authentication — they had an incorrect SPF record — and we did a deep list cleanse removing 12,000 contacts that hadn't engaged in over a year, their deliverability went from 96 percent to 99.2 percent. Their landing page traffic from email increased by 22 percent. Same subject lines, same body copy, same send time. Just cleaner infrastructure. Lucas: Twenty-two percent. That's enormous. And it cost them nothing but engineering time to update a few DNS records and a few hours of data hygiene. No new content, no new tool, no new strategy. Just fixing the pipes. Luna: And that's why I think this is the most underrated lever in marketing automation. It's not glamorous. Nobody gets a promotion for 'improved SPF records.' But the ROI is immediate and measurable. Lucas: So if you're listening and you've been frustrated with your email automation performance, I'd start with three things. One: check your authentication — DKIM, SPF, DMARC. Two: look at your hard bounce and spam complaint rates. Three: do a list cleanse of anyone who hasn't engaged in six months. That's a one-weekend project that can change your numbers. Luna: And if these conversations have sparked something you've actually used, or if you just want to support the show staying ad-free, we're at buy me a coffee dot com slash fexingo. No pressure, truly. It's just a way for listeners who find value here to keep the lights on. Lucas: Yeah. And no perks or anything — just knowing the show is useful to people. Anyway, back to deliverability. One thing I want to add: there's a psychological trap here. Marketing teams spend so much energy on creative — the subject line, the CTA, the design — that they don't want to hear that the problem is technical. It feels like admitting the creative didn't matter. Luna: But the creative does matter. It just can't work if it never arrives. And once you fix the pipes, the creative gets a real test. You can actually attribute performance to the content, not to luck. Lucas: Right. And there's one more angle I want to cover: how deliverability interacts with engagement scoring. Most automation platforms use positive actions — opens, clicks — to increase a lead's score. But if those actions never happen because the email didn't deliver, the score stays flat. Luna: And then you have sales reps complaining that marketing leads are low quality. But it's not the leads — it's the delivery. The leads are perfectly good; they just never saw your content. Lucas: Exactly. So you end up with a misaligned funnel. Marketing thinks they're sending 50,000 emails, sales sees 2,000 leads that look disengaged, and everyone blames the leads instead of the infrastructure. This is a huge source of friction between marketing and sales teams. Luna: And fixing it doesn't require a platform change. You don't need to switch from HubSpot to Salesforce or from Marketo to Pardot. You just need to audit your technical setup and clean your list. It's the cheapest optimization in the playbook. Lucas: Alright, let's wrap with a practical tip. If you're going to do one thing this week, go into your email dashboard and look for the 'inbox placement rate' report. If you can't find it, that's a red flag. Then check your hard bounce rate. If it's above 2 percent, you have a list hygiene problem. And if you don't have DKIM set up, that's your number one priority. Luna: Good advice. And if you do those three things and see a bump in performance, let us know. We'd love to hear about it. Lucas: Absolutely. That's it for this episode. We'll be back with another angle on marketing automation next week.