Growing an engaged subscriber base takes time. When people sign up because they genuinely want to hear from you, they open your emails and act on them. Keep it personal and relevant and that relationship holds.
But even marketers with a healthy list can drift into bad habits. A steady subscriber count can create a false sense of security. Here are five pieces of advice you should ignore, and what to do instead.
#1 No Need to Promote Your Opt-in Page
If you build a sign-up page and do nothing to drive traffic to it, it will not grow. Social media is one of the cheapest and most direct ways to fix that.
Share your opt-in offer on your social channels. A free download, a checklist, a short guide, anything your audience actually wants in exchange for their email address. It closes the growth gap faster than almost anything else.
#2 Never Give People the Option to Opt Out
A large list means nothing if only 20% of subscribers open your emails. Sending to the same bloated list year after year will not produce different results.
Give people a clear, easy way to unsubscribe. It keeps your list accurate, improves your open rates, and protects your sender reputation. In South Africa, it is also a POPIA requirement.
Audit your list regularly. Identify active subscribers and separate them from addresses that are outdated or have gone cold, that inactive segment can easily be 20% of your total. Before you remove cold subscribers, send a re-engagement email asking whether they still want to hear from you. If they do not respond, remove them.
#3 No Need to Maintain Your List
Assuming your list is fine without checking is how deliverability problems start.
Run A/B tests. Test subject lines, send times, and content formats. The results give you real evidence for segmenting your list rather than guesswork. Once you segment, you can send more relevant content to each group, and relevance is what keeps subscribers engaged.
Maintaining a list is not a once-off task. Build it into your regular email calendar.
#4 You Can Send Whatever You Like to Your List
Your subscribers signed up for a reason. That reason may not match what you feel like sending this week.
You cannot assume your audience loves every email you send just because you think it is useful. The fix is straightforward: ask them. Use a short survey, invite replies, check social media comments. Let actual feedback shape your content decisions rather than internal assumptions.
Stay on-brand and stay relevant to what people originally signed up for. When you drift from that, unsubscribes and spam complaints follow.
#5 Buy an Email List, It's Easier and Quicker
This is the most damaging mistake on the list.
Buying an email list means you are sending to people who never asked to hear from you. You have no relationship with them, no context, and no reason for them to trust you. Even lists sold as "targeted" are built without your brand's specific audience in mind.
The practical consequences are serious. High spam complaint rates hurt your sender reputation and can get your sending domain blacklisted. In South Africa, sending unsolicited commercial email also puts you at risk under POPIA.
There is no shortcut to a healthy list. Build it yourself, one opt-in at a time.
These five mistakes are common precisely because the advice behind them sounds reasonable on the surface. Avoid them and your list will stay accurate, engaged, and worth sending to.
Frequently asked questions
- Is buying an email list legal in South Africa?
- Sending unsolicited commercial email to purchased lists puts you at risk under POPIA, which requires that recipients have consented to receive communications from you specifically. Beyond the legal risk, bought lists damage your sender reputation and typically produce very poor engagement.
- How often should I clean my email list?
- Review your list at least every quarter. Identify subscribers who have not opened or clicked in six or more months, send them a re-engagement campaign, and remove those who do not respond. Inactive addresses drag down your open rates and can trigger spam filters.
- Why is it important to let subscribers opt out?
- An easy unsubscribe option keeps your list accurate, improves engagement metrics, and is required under POPIA. Subscribers who cannot opt out easily will mark your emails as spam instead, which damages your sender reputation with email providers.
- What is the best way to grow an email list organically?
- Promote your opt-in offer across your social media channels and website. Offer something genuinely useful in exchange for a sign-up, such as a guide, checklist, or discount. Organic list growth takes longer than buying a list, but the subscribers you earn this way are far more likely to open and act on your emails.