Digital Marketing Email Marketing Syllabus

Give four common criteria used to segment an email list.

Demographics (age, location, gender), behavior (past purchases, site activity), engagement level (active vs. dormant), purchase history/value, position in the sales funnel, and stated preferences.

What is dynamic content in email personalization?

Email content blocks that automatically change based on the recipient's data or segment (e.g., different product recommendations, images, or offers shown to different users within the same campaign).

What is an Email Service Provider (ESP)?

A platform that lets businesses build, send, automate, and track bulk marketing emails while managing lists, deliverability, and compliance (e.g., Mailchimp, Klaviyo, HubSpot, Constant Contact, SendGrid).

List four factors to consider when choosing an ESP.

Pricing/scalability, deliverability rates, automation and segmentation features, ease of use/templates, integrations with other tools (CRM, e-commerce), analytics/reporting, and support/compliance features.

What is email automation?

Using software to automatically send emails triggered by predefined conditions, schedules, or user behaviors (e.g., welcome series, birthday emails, cart abandonment) without manual sending each time.

What is a trigger in email automation?

An event or condition that automatically starts an automated email or workflow—such as a new sign-up, a purchase, a link click, cart abandonment, or a date (e.g., birthday).

What is a workflow (automation flow) in email marketing?

A branching sequence of automated emails and actions that guide a subscriber through a journey based on triggers and their responses (opens, clicks, conditions), often visualized as a flowchart with if/then logic.

Define open rate and give its formula.

The percentage of delivered emails that were opened. $$\text{Open Rate} = \frac{\text{Unique Opens}}{\text{Emails Delivered}} \times 100\%$$

Define click-through rate (CTR) and give its formula.

The percentage of delivered emails in which a recipient clicked at least one link. $$\text{CTR} = \frac{\text{Unique Clicks}}{\text{Emails Delivered}} \times 100\%$$

Define click-to-open rate (CTOR) and give its formula.

The percentage of people who opened an email and then clicked a link—a measure of content/relevance quality. $$\text{CTOR} = \frac{\text{Unique Clicks}}{\text{Unique Opens}} \times 100\%$$

Define conversion rate for an email campaign.

The percentage of recipients who completed the desired action (purchase, signup, download). $$\text{Conversion Rate} = \frac{\text{Number of Conversions}}{\text{Emails Delivered}} \times 100\%$$

Define bounce rate and distinguish hard vs. soft bounces.

$$\text{Bounce Rate} = \frac{\text{Bounced Emails}}{\text{Emails Sent}} \times 100\%$$ A hard bounce is a permanent failure (invalid/nonexistent address); a soft bounce is a temporary failure (full inbox, server down, message too large).

What is the unsubscribe rate and why should it be monitored?

$$\text{Unsubscribe Rate} = \frac{\text{Unsubscribes}}{\text{Emails Delivered}} \times 100\%$$ It signals content relevance and list health; a rising rate warns of over-mailing or poor targeting.

What is the CAN-SPAM Act and name two of its core requirements.

A U.S. law governing commercial email. Requirements include: no false/misleading header or subject lines, identifying the message as an ad where relevant, including a valid physical postal address, and providing a clear, honorable opt-out (unsubscribe) mechanism.

What is GDPR and how does it affect email marketing?

The EU's General Data Protection Regulation requires explicit, freely given consent to collect and email personal data, the right to access/erase data, clear privacy notices, and easy withdrawal of consent. Violations carry heavy fines.

Under GDPR, how quickly must an unsubscribe/opt-out request generally be honored compared to CAN-SPAM?

CAN-SPAM requires honoring opt-outs within $10$ business days; GDPR requires ceasing processing/withdrawing consent without undue delay (effectively as soon as reasonably possible).

What is email deliverability?

The ability of your emails to successfully reach recipients' inboxes (rather than spam folders or being blocked). It depends on sender reputation, authentication, list hygiene, and engagement.

What is the difference between delivery rate and deliverability (inbox placement)?

Delivery rate measures whether the email was accepted by the receiving server (not bounced). Deliverability/inbox placement measures whether accepted emails actually land in the inbox versus the spam/junk folder.

Name the three main email authentication protocols that improve deliverability.

SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail), and DMARC (Domain-based Message Authentication, Reporting & Conformance).

What does SPF (Sender Policy Framework) do?

It is a DNS record specifying which mail servers are authorized to send email on behalf of a domain, helping receiving servers detect spoofing/forged senders.

What does DKIM (DomainKeys Identified Mail) do?

It adds a cryptographic digital signature to outgoing emails, allowing the receiving server to verify the message was sent by the domain owner and was not altered in transit.

What is sender reputation and what factors influence it?

A score ISPs assign to a sending domain/IP that affects inbox placement. It is influenced by spam complaints, bounce rates, engagement (opens/clicks), spam-trap hits, sending volume/consistency, and authentication.

What is a spam trap (honeypot)?

An email address used by ISPs/blocklists to catch senders with poor list hygiene. Sending to it (often a recycled or never-opted-in address) flags you as a spammer and harms sender reputation.

What is list hygiene and why does it matter for deliverability?

The ongoing practice of cleaning your list by removing invalid, bounced, inactive, and unengaged addresses. It reduces bounces and spam complaints, protects sender reputation, and improves inbox placement.

Name two ethical considerations specific to email marketing beyond legal compliance.

Respecting subscriber consent and preferences (no deceptive opt-ins), being transparent about how data is used, avoiding manipulative/false urgency and clickbait subject lines, protecting subscriber privacy/data security, and not over-mailing.

What is A/B testing (split testing) in email marketing?

Sending two variants (A and B) that differ in one element to separate portions of your audience to measure which performs better on a chosen metric, then sending the winner to the remainder.

Name four common elements to A/B test in an email.

Subject line, sender/from name, preheader text, CTA copy or button design, send time/day, images, email layout, and personalization.

Why should you test only one variable at a time in an A/B email test?

So that any difference in performance can be attributed to that single change; testing multiple variables at once makes it impossible to know which one caused the result (unless doing structured multivariate testing).

What is statistical significance in the context of A/B testing an email?

A measure (commonly a $95\%$ confidence level, i.e. $p < 0.05$) indicating that the observed performance difference between variants is unlikely due to random chance and reflects a real effect, given a sufficient sample size.

What is behavioral targeting in email marketing?

Delivering emails based on a subscriber's observed actions—such as pages visited, products viewed, past purchases, email opens/clicks, or cart activity—to send timely, relevant messages that match intent.

How does integrating email with other marketing channels improve results, and give one example?

An omnichannel approach reinforces messaging and increases conversions across touchpoints. Example: syncing email lists with social media custom/lookalike audiences for retargeting ads, or triggering emails from CRM/e-commerce and SMS activity for a consistent customer journey.