Email & Lifecycle terms
Email delivery, segmentation, automation, retention, and customer messaging. Browse plain-language definitions and practical context below.
Terms in this topic
Alphabetical order-
Sending two versions of an email to compare which performs better.
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An automated reminder sent when a shopper adds items to a cart but does not buy.
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A list of trusted senders whose email is allowed through filters without extra scrutiny.
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A Google technology that lets emails include interactive, app-like content.
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An automated email marking a milestone date such as signup, first purchase, or membership length.
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An Apple feature that hides whether and when Apple Mail users open emails.
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Proving that an email really comes from the domain it claims to be from.
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A message sent automatically after a defined trigger.
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Email targeted to a subscriber based on their tracked behavior and interests.
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Grouping subscribers by their actions, such as opens, clicks, or past purchases.
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A standard that displays a brand's verified logo beside authenticated email in the inbox.
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An automated email sent to a subscriber on or near their birthday, often with a greeting or offer.
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A published list of IPs or domains known for sending spam, used to filter mail.
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An email that could not be delivered and was returned by the receiving server.
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The percentage of sent emails that could not be delivered.
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The share of sent emails that bounced, expressed as a percentage.
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A single email sent at one time to a whole list or segment, not triggered by behavior.
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An automated email sent when a shopper views products but never adds them to a cart.
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The 2003 US law setting rules for commercial email, including opt-out and honest headers.
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Canada's law requiring consent and clear identification before sending commercial electronic messages.
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A chatbot is software that simulates conversation to answer questions or complete tasks through text or voice.
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The percentage of delivered emails that produced at least one click.
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The share of people who opened an email and then clicked a link inside it.
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Grouping subscribers by a shared start point to compare how their email engagement changes over time.
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A subscription confirmed by the recipient, often used as another name for double opt-in.
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Conversational Marketing engages buyers through real-time, two-way dialogue using chat, messaging apps, or voice instead of one-way forms.
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The share of email recipients who complete a desired action after clicking.
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The full path a customer travels from first awareness through purchase, loyalty, and beyond.
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Guiding new customers to first value and confident use after they buy or sign up.
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How an email appears when a client displays it with a dark background.
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A sending IP address used by only one sender, isolating its email reputation.
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The percentage of sent emails accepted by receiving servers, meaning they did not bounce.
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An email authentication method that signs messages to prove they were not altered.
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A policy that tells receivers what to do when email fails SPF and DKIM checks.
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How much mailbox providers trust the sending domain used in your email.
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A signup method where a subscriber must confirm their email through a follow-up verification message.
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A scheduled series of automated messages delivered over time.
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A section of an email that changes its content based on each recipient's data or rules.
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Software that sends emails automatically based on schedules, rules, or subscriber actions.
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The planned rhythm and timing of a series of emails sent to a contact.
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The ability of legitimate email to reach recipients' inboxes.
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Tailoring email content to individual recipients using their data and behavior.
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The return earned from email marketing compared with what it cost to run.
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Dividing an email list into smaller groups so each receives more relevant messages.
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A platform businesses use to build, send, and track bulk marketing or transactional email.
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Checking whether an email address is real, correctly formatted, and able to receive mail before sending.
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A service that reports back to senders when recipients mark their email as spam.
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The share of recipients who forward or share an email with others.
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The sender name shown in the inbox that identifies who the email is from.
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GDPR Consent
General Data Protection RegulationFreely given, specific, informed agreement to receive marketing email under European data protection law.
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A filter that temporarily rejects unknown senders, expecting legitimate servers to retry.
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The moment a lead or customer is passed from one team to another, often marketing to sales.
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A permanent delivery failure, usually from an invalid or nonexistent email address.
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An email built with HTML so it can include images, layout, and styling.
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A message shown to users while they are actively using an app or site.
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The percentage of delivered emails that actually land in the inbox rather than spam.
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A rendering of how an email will look across different inboxes before sending.
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How much mailbox providers trust the IP address that sends your email.
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Gradually increasing send volume on a new IP to build trust with mailbox providers.
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Sending relevant, timed messages to build trust with leads until they are ready to buy.
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Assigning points to leads based on traits and actions to rank their sales readiness.
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Coordinating messages across every stage of the customer journey, from first touch to loyalty.
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A label marking where a contact sits in their journey from stranger to customer and beyond.
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The rate at which an email list loses subscribers over time through opt-outs and inactivity.
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How quickly an email list gains net new subscribers over a period.
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The ongoing practice of cleaning an email list by removing invalid, inactive, or unwanted addresses.
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Dividing a contact list into meaningful groups for tailored communication.
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Previewing an email across many clients and devices using the Litmus platform.
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Using software and rules to coordinate repeatable marketing actions.
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The difference between a lead marketing deems interested and one sales deems ready to buy.
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A placeholder code in an email that is replaced with each recipient's own data at send time.
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Marketing text messages that include images, video, audio, or longer text.
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A recurring email that shares updates, articles, or curated content with subscribers.
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A planned series of emails that builds a relationship and guides leads toward a decision.
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A series of emails that helps new users or customers get started and find value.
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The percentage of delivered emails recorded as opened.
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An affirmative action through which a person agrees to receive communication.
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An opt-out keyword is a word like STOP that recipients text to unsubscribe from a marketing SMS program.
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Using a tiny hidden image to detect when an email is opened.
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An email made only of text, with no HTML formatting, images, or styling.
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An automated email series sent after a purchase to confirm, support, and retain the buyer.
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A page where subscribers choose which emails they receive and how often.
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The preview snippet shown next to or below the subject line in many inboxes.
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Collecting more contact details gradually across multiple forms instead of all at once.
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A short message sent from an app to a user's device screen.
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A targeted email series that tries to reactivate subscribers who have stopped opening or clicking.
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An estimate of how many recipients actually spent time reading an email.
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Marketing focused on keeping existing customers active, engaged, and buying again.
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Segmenting customers by how recently, how often, and how much they buy.
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RCS is an upgraded texting standard that adds branding, images, buttons, and read receipts to SMS-style messaging.
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How often you email a subscriber over a given period, such as per week or month.
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Choosing when to send each email to raise the chance a recipient engages.
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Mailbox providers' assessment of a sender's trustworthiness.
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A 0 to 100 reputation rating for a sending IP address, produced by Validity.
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A sending IP address used by many senders, who collectively influence its reputation.
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A signup method that adds a subscriber immediately, with no email confirmation step.
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Sending promotional or transactional text messages to customers who opted in.
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A temporary delivery failure that may succeed if the message is retried later.
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The percentage of delivered emails that recipients report as spam.
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An email address used only to catch senders with poor list hygiene.
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An email standard listing which servers are allowed to send mail for a domain.
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A lead vetted and accepted as ready for direct sales engagement.
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The short headline of an email shown in the inbox that helps decide whether it is opened.
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A rule for automatically removing or pausing subscribers who stay inactive for a set period.
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A list of addresses your system blocks from receiving mail, even if they exist elsewhere.
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TCPA Compliance
Telephone Consumer Protection ActTCPA Compliance means following the US law that governs telemarketing calls, texts, and prerecorded messages.
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A one-to-one email triggered by a user action to deliver expected, non-promotional information.
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An email sent automatically in response to a specific subscriber action or event.
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The percentage of email recipients who opt out of a list after a given send.
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Notifications sent through a web browser to users who subscribed on a site.
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An automated sequence for new subscribers or customers.
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WhatsApp Marketing uses the WhatsApp messaging app to send updates, support, and promotions to customers who opt in.
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A targeted email effort to bring back customers who have not bought in a long time.