Email Marketing

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About email marketing

Email marketing involves creating, sending and managing email campaigns to communicate with subscribers who have given permission to receive messages. It encompasses everything from promotional newsletters and product announcements to automated sequences triggered by specific actions, such as signing up for a service or abandoning a shopping cart. The work includes writing copy, designing layouts, managing subscriber lists, setting up automation workflows, and analysing performance metrics like open rates, click-through rates and conversions.

What separates effective email marketing from poor execution is relevance and timing. A well-executed campaign segments subscribers based on behaviour, preferences or demographics, then delivers messages tailored to each group. Technical competence matters too: emails must render correctly across dozens of email clients, avoid spam filters, and comply with regulations like GDPR or CAN-SPAM. Deliverability—the ability to reach the inbox rather than the spam folder—depends on maintaining list hygiene, authenticating sending domains with SPF, DKIM and DMARC records, and monitoring sender reputation.

The discipline also requires understanding how people interact with email differently than other channels. Subject lines determine whether a message gets opened at all. Preview text, the snippet visible before opening, works alongside the subject line to convey value. Frequency affects engagement: too many emails cause unsubscribes, too few and subscribers forget they opted in. Skilled practitioners balance promotional content with genuinely useful information, test variables systematically, and recognise that every audience behaves differently.

Guides related to email marketing

Email Marketing — questions and answers

What causes emails to land in spam instead of the inbox?
Spam filters evaluate sender reputation, authentication records, content patterns and engagement history. High bounce rates, spam complaints, missing SPF or DKIM records, and spammy language all increase the likelihood of filtering. Sending to purchased lists or inactive addresses damages sender reputation. Consistent engagement from recipients—opens, clicks, replies—signals legitimacy and improves deliverability over time.
How do email automation workflows differ from broadcast campaigns?
Broadcast campaigns send a single message to a list at a scheduled time, like a weekly newsletter. Automation workflows are sequences triggered by subscriber actions—signing up, making a purchase, clicking a link—and send messages based on conditions and delays you define. Workflows handle onboarding, cart abandonment, re-engagement and nurturing without manual intervention once built.
Why do open rates vary so much between email clients?
Email clients handle tracking pixels differently. Apple Mail Privacy Protection preloads images on its servers, registering opens even if the recipient never views the message. Gmail caches images, sometimes showing opens with a delay. Outlook may block images by default. This makes open rates an increasingly unreliable metric, pushing practitioners to focus on clicks and conversions instead.
What does list segmentation actually achieve beyond personalisation?
Segmentation prevents sending irrelevant messages that prompt unsubscribes or spam complaints. It allows different sending frequencies for engaged versus inactive subscribers, protecting sender reputation. Segments based on purchase history, location or behaviour enable targeted offers that convert better than generic broadcasts. Proper segmentation also isolates problems—if one segment shows poor deliverability, you can investigate without affecting others.
Can HTML emails be designed once and work everywhere, or does each client need adjustments?
Email clients interpret HTML inconsistently. Outlook uses Microsoft Word's rendering engine, which ignores many CSS properties. Gmail strips out certain styles. Mobile clients have varying screen widths. Practitioners build emails using tables for layout, inline CSS, and test across clients using tools like Litmus or Email on Acid. Responsive design techniques adapt layouts for mobile, but fallbacks are essential.
When should a subscriber be removed from a list rather than kept for future campaigns?
Remove hard bounces immediately—those addresses are invalid and damage sender reputation if you keep mailing them. Subscribers who haven't opened or clicked in six to twelve months hurt engagement metrics and deliverability. Some practitioners send a re-engagement campaign first, removing those who still don't respond. Keeping inactive subscribers inflates list size while reducing overall performance.