Before launching any ABM campaign, prioritize data hygiene. In large enterprises, it's common for a single account to exist under multiple names. This 'dirty data' can make 40-50% of an uploaded account list unmatchable in ad platforms, wasting significant budget and effort.

Don't just analyze your entire email list's performance. Create a separate set of metrics for "verified subscribers"—those who fit your Ideal Customer Profile (ICP). This allows you to differentiate what resonates with your target buyers versus the broader audience, leading to more effective content strategy.

Don't fear unsubscribes after trying a new tactic like an emoji. A high unsubscribe rate often means your email finally stood out to a long-disengaged segment. This prompted them to take action and clean themselves from your list, which is a positive outcome for list health.

Email providers track engagement. When many subscribers ignore your emails, algorithms assume your content is low-priority, filtering it to spam or promotions for everyone—even your most loyal followers. A clean list improves deliverability for your entire audience.

Instead of permanently deleting unengaged subscribers, move them to a non-mailing segment within your CRM. This preserves their valuable historical data for tracking and reporting, especially if they were past customers. Many CRMs won't charge for these non-emailed contacts.

Before removing inactive subscribers, always check their purchase history. Some customers buy without regularly opening promotional emails. They may see the subject line as a reminder or engage with your brand on other channels. A recent purchase is a strong signal to keep them on your list.

When results don't match the perceived size of your list, it's easy to question your offers, messaging, and abilities. The issue is often not your strategy, but that you're only reaching a fraction of your list. Cleaning it reveals your true, engaged audience size, restoring confidence.

Despite claims that Apple's privacy changes and bots have made them irrelevant, open rates remain a valuable leading indicator for email performance. Marketers who dismiss them are ignoring a crucial signal of audience engagement and list health. These metrics are provided by platforms and should be monitored.

Avoid list-cleaning automations with a small subscriber base (e.g., under 1,000). Instead of deleting inactive subscribers, personally email them to ask what they're struggling with. This approach turns a technical cleanup task into a valuable user research and re-engagement opportunity.