Email Marketing Glossary.
Clear, no-fluff definitions of every email marketing term that matters—from open rates to double opt-in.
Welcome Email
Also known as: welcome series, onboarding email
You only get one first impression, and the welcome email is it. Sent right after someone joins your list, it arrives when interest and expectation are at their peak — which is why welcome emails post standout open and click rates.
What should a welcome email include?
Thank the subscriber, set expectations for what they'll receive, deliver any promised incentive (like a discount code), and give one clear next step. Many brands use a short welcome series rather than a single email.
Why do welcome emails matter?
They convert new interest into action, reinforce your brand, and establish sending patterns that help deliverability. A strong welcome flow often drives meaningful first-purchase revenue.
Single email or series?
A welcome series (typically 2–4 emails) usually outperforms a lone welcome email by telling your story, sharing bestsellers, and building toward a first purchase.
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