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Marketing Glossary: Key Terms & Definitions

Your go-to marketing glossary, where marketing terminology is finally made simple.

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Double Opt-In vs. Single Opt-In

Single opt-in (SOI) and double opt-in (DOI) are the two methods businesses use to add new subscribers to an email list. The difference comes down to one extra step — and that step has real consequences for list quality, deliverability, and engagement. Single opt-in adds subscribers to your audience immediately after they submit a form, … Continue reading "Double Opt-In vs. Single ...

Email Marketing Attribution

Email marketing attribution is the process of identifying which emails — or sequences of emails — contributed to a specific outcome, and assigning credit accordingly. A sale, a sign-up, a demo request. Attribution connects those results back to the email touchpoints that helped cause them. Email marketing attribution refers to data-collection efforts in which the … Continue reading "Email Marketing ...

Email Warm-Up

Email warm-up is the process of gradually increasing sending volume from a new or inactive email address or domain — building a positive sender reputation with mailbox providers before launching full-scale campaigns. Email warm-up is the process of gradually increasing email volume from a new email address or domain to build a positive sender reputation. … Continue reading "Email ...

Return on Investment (ROI)

Return on investment (ROI) in marketing is the measure of how much revenue a marketing campaign or programme generates relative to what it cost to run. It answers the most fundamental question any marketing budget ever faces: did we get more out than we put in? Marketing ROI, or MROI for short, is the return … Continue reading "Return on Investment ...

Lead Generation

Lead generation is the process of attracting potential customers and capturing their contact information — so a business can nurture that interest and eventually convert it into a sale. It sits at the very top of the sales funnel, before qualification, before outreach, before any kind of closing conversation. In marketing, lead generation refers to … Continue reading "Lead ...

Inbox Placement Rate

Inbox placement rate (IPR) is the percentage of delivered emails that land in a recipient’s primary inbox — not the spam folder, not the promotions tab, not any other secondary folder. It tells you where your email actually ended up after it was accepted by the receiving server. Inbox placement rate shows the percentage of … Continue reading "Inbox Placement ...

Blocklist Status

Blocklist status refers to whether a sending domain or IP address currently appears on one or more blocklists — databases maintained by anti-spam organisations, ISPs, and security vendors that flag sources known or suspected of sending spam, malicious content, or abusive email. An email blocklist is a real-time list of domains or IP addresses that … Continue reading "Blocklist ...

SPF Record

An SPF record is a DNS text entry that tells receiving mail servers which IP addresses and servers are authorised to send email on behalf of a domain. It’s the first layer of email authentication — a published list that lets any incoming mail server check whether an email truly came from a trusted source … Continue reading "SPF ...

Domain Reputation

Domain reputation is the level of trust that mailbox providers — Gmail, Outlook, Yahoo, and others — assign to a sending domain based on its long-term email behaviour. It’s the cumulative record of how emails from your domain have performed over time: how recipients engage with them, how often they’re marked as spam, how many … Continue reading "Domain ...

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