The outbound glossary

Cold email deliverability is the share of your outbound cold emails that actually reach the recipient's inbox (not spam, not blocked). It depends on domain authentication (SPF, DKIM, DMARC), sender reputation, mailbox warmup, list hygiene and content — not just whether the email was 'sent'.

DMARC (Domain-based Message Authentication, Reporting & Conformance) is an email standard that tells receiving mail servers what to do with messages that fail SPF or DKIM checks — and sends you reports. It prevents spoofing of your domain and is now effectively required by Gmail and Yahoo for bulk senders.

Mailbox warmup is the practice of gradually increasing a new email account's sending volume while generating positive engagement (opens, replies, moving mail out of spam) so mailbox providers build trust in the sender before real campaigns ramp up.

Generative Engine Optimization (GEO), also called Answer Engine Optimization (AEO), is the practice of structuring content so AI answer engines (ChatGPT, Claude, Perplexity, Google AI Overviews) can extract, cite and recommend it. It complements SEO: SEO wins the click, GEO wins the citation.

Multichannel sequencing is automating a coordinated outreach cadence across more than one channel — for example email, then a LinkedIn touch, then a call, then a WhatsApp follow-up — from a single sequence, with per-channel timing and safety rules.

Caller-ID rotation is the practice of placing outbound sales calls from a pool of phone numbers (often country- or area-matched to the prospect) rather than a single number, to improve answer rates and avoid a single number being flagged as spam.

SPF (Sender Policy Framework) is an email-authentication standard that lets a domain owner publish, in DNS, the list of mail servers allowed to send email on the domain's behalf. Receiving servers check the sending IP against that list to help detect spoofing and decide whether to trust the message.

DKIM (DomainKeys Identified Mail) is an email-authentication method that attaches a cryptographic signature to each message. The receiving server verifies the signature against a public key in the sender's DNS, proving the message wasn't altered in transit and genuinely came from the signing domain.

Sender reputation is the trust score mailbox providers assign to your sending domain and IP based on how recipients react to your mail — opens, replies, spam complaints, bounces and spam-trap hits. A high reputation lands you in the inbox; a low one routes you to spam or blocks you.

Email bounce rate is the percentage of sent emails that are returned undelivered. Hard bounces are permanent (invalid or non-existent address); soft bounces are temporary (full mailbox, server down). A high bounce rate signals a poor list and damages sender reputation.

A spam trap is an email address operated by mailbox providers and blocklist operators specifically to catch senders with poor list hygiene. There's no real person behind it, so any mail it receives indicates you're emailing addresses you didn't earn permission to contact.

Inbox placement rate (IPR) is the percentage of delivered emails that actually land in the primary inbox rather than the spam/junk folder or a tab like Promotions. Unlike 'delivered' (which only means accepted by the server), IPR measures whether a human is likely to see the message.

The TCPA is a U.S. federal law that restricts telemarketing calls, autodialed and prerecorded calls, and unsolicited texts. It requires prior consent for certain contact, honors the Do-Not-Call registry, and enforces calling-time windows — with statutory damages per violation that make compliance a real financial risk.

A Do-Not-Contact (or Do-Not-Call) list is a record of people who have opted out of your outreach — or registered on a government DNC registry — whom you must not contact again. Honoring it is both a legal requirement (TCPA, GDPR, CAN-SPAM) and a deliverability/reputation safeguard.

A2P 10DLC is the U.S. framework for sending Application-to-Person text messages over standard 10-digit long-code numbers. Carriers require businesses to register their brand and campaigns (use cases) to send A2P SMS legitimately, with throughput and trust scores tied to that registration.

DLT (Distributed Ledger Technology) registration is India's TRAI-mandated framework for commercial SMS. Businesses must register as an entity, register sender IDs (headers) and message templates on a DLT platform, and only send pre-approved content — otherwise messages are blocked.

Cold email is an unsolicited but permission-conscious, personalized outreach email sent to a prospect you have no prior relationship with, for a business purpose. Done well it is targeted and relevant (not bulk spam) and complies with laws like CAN-SPAM and GDPR.

A sales cadence (or sequence) is a structured, time-based series of outreach touches — emails, calls, LinkedIn actions, texts — designed to reach a prospect across multiple channels and attempts before disqualifying or moving on. It defines what to send, on which channel, and when.

A CRM (Customer Relationship Management) system is software that stores and organizes your contacts, companies, deals and interactions in one place, so a team can manage relationships and a sales pipeline. Modern CRMs also automate follow-up, reporting and, increasingly, AI-assisted outreach.

Lead enrichment is the process of automatically adding missing data to a lead or company record — job title, company size, industry, verified email, phone, LinkedIn, technographics — from third-party data sources, so reps can segment, personalize and prioritize without manual research.

Email verification is the process of checking whether an email address is valid and safe to send to — confirming the syntax, domain and mailbox exist and aren't a known trap or disposable address — before you add it to a campaign. It is the single most effective way to control bounce rate.

A catch-all (or accept-all) email domain is configured to accept mail sent to any address at the domain, even non-existent mailboxes, rather than rejecting unknown recipients. This makes it impossible for a verifier to confirm whether a specific address truly exists.

A sales sequence is an automated, pre-defined series of outreach steps — emails, calls, LinkedIn touches, texts — that fire on a schedule to move a prospect from cold to a conversation. Each step specifies a channel, a delay and often a branching condition (like skip if the prospect already replied), so follow-up happens consistently without a rep remembering every touch.

A Sales Development Representative (SDR) is a sales role focused on inbound lead qualification and top-of-funnel prospecting rather than closing. SDRs respond to and qualify marketing-generated leads, then hand qualified opportunities to account executives who run the deal to close.

A Business Development Representative (BDR) is a sales role focused on outbound prospecting — generating net-new pipeline by proactively reaching accounts that have not raised their hand. BDRs research target accounts, run cold outreach across channels, and book qualified meetings for account executives.

An Ideal Customer Profile (ICP) is a description of the company that gets the most value from your product and is easiest to win and retain — defined by firmographics like industry, company size, revenue, geography and technology stack. It targets accounts (the company), distinct from a buyer persona, which describes the individual within the account.

Account-Based Marketing (ABM) is a B2B go-to-market strategy that treats individual high-value accounts as markets of one — coordinating marketing and sales to target a defined list of named accounts with personalized, multichannel outreach, rather than casting a wide net for individual leads.

Lead scoring is the practice of assigning a numeric value to each lead based on how well they fit your ideal customer profile (demographic/firmographic fit) and how engaged they are (behavioral signals like email opens, site visits, demo requests). The score ranks leads so sales works the hottest ones first.

A Marketing Qualified Lead (MQL) is a lead that has shown enough interest and fit — through behaviors like downloading content, attending a webinar or repeated site visits — that marketing deems it worth passing to sales for follow-up. It is more engaged than a raw lead but not yet vetted by a salesperson.

A Sales Qualified Lead (SQL) is a prospect that a salesperson has evaluated and accepted as a legitimate opportunity worth active pursuit — typically confirming need, fit, budget and timing beyond the interest signals that made them a marketing qualified lead. The SQL stage marks the transition from marketing nurture to an active sales process.

A sales pipeline is a visual, stage-by-stage representation of every open deal and where it sits in your sales process — from first qualified opportunity through stages like discovery, proposal and negotiation to closed-won or closed-lost. It shows what is in play, its value, and what has to happen next to advance each deal.

Email open rate is the percentage of delivered emails that recipients opened, historically measured by loading a tiny tracking pixel. It has become a less reliable metric since Apple Mail Privacy Protection and similar features pre-fetch images and inflate opens, so teams increasingly treat it as a directional signal rather than ground truth.

Email reply rate is the percentage of delivered emails that received a response from the recipient. For cold outreach it is the most reliable performance metric, because unlike opens it can't be inflated by privacy pre-fetching — a reply requires a real human to engage with the message.

Click-through rate (CTR) is the percentage of people who clicked a link out of those who received (or saw) the message. In email it is clicks divided by delivered emails; in ads it is clicks divided by impressions. CTR measures how compelling your content and call-to-action are at driving the next action.

A hard bounce is a permanent email delivery failure — the address is invalid, the domain doesn't exist, or the mailbox was deleted — and should be suppressed immediately. A soft bounce is a temporary failure — a full mailbox, a message too large, or a server briefly down — which may succeed on a later retry.

List hygiene is the ongoing practice of keeping an email list clean and accurate — verifying addresses, removing invalid and hard-bounced contacts, suppressing unsubscribes and long-term non-engagers, and avoiding purchased or scraped data. Good hygiene protects deliverability and keeps sender reputation healthy.

Double opt-in is a subscription method where a new subscriber must confirm their email address by clicking a link in a confirmation message before being added to your list. It proves the address is valid and that the person genuinely consented, producing a cleaner, more engaged and more compliant list than single opt-in.

The CAN-SPAM Act is the U.S. federal law governing commercial email. It does not require prior opt-in, but it does require accurate From and header information, non-deceptive subject lines, identification of the message as an ad where applicable, a valid physical postal address, and a working opt-out that is honored promptly. Violations carry substantial per-email penalties.

The GDPR (General Data Protection Regulation) is the EU/UK data-protection law that governs how you process personal data, including email addresses, of people in those regions. For cold B2B outreach it generally requires a lawful basis — most commonly legitimate interest — plus transparency, an easy opt-out, and honoring data-subject rights like access and erasure.

Domain reputation is the trust score mailbox providers assign to your sending domain based on its authentication, sending history, engagement and complaint signals. Unlike IP reputation, it follows the domain wherever it sends, which is why it has become the dominant reputation signal as senders share pooled IPs.

IP warmup is the process of gradually increasing sending volume from a new or dormant dedicated IP address while maintaining high engagement, so mailbox providers build trust in that IP before it sends full volume. Sending large volume from a cold IP triggers throttling or spam-foldering because providers have no history to trust.

Spintax (spinning syntax) is a text-templating notation that lets one message template generate many slightly different variations by choosing among alternative words or phrases — written as {option A|option B|option C}. In cold email it is used to reduce identical-content footprints across recipients, so bulk sends look less templated to spam filters.

Merge tags, also called personalization tokens or merge fields, are placeholders in a message template — like {{first_name}} or {{company}} — that are automatically replaced with each recipient's data at send time. They let one template produce individually personalized messages at scale without manual editing.

A drip campaign is a series of automated messages sent on a predetermined schedule or triggered by user actions, delivered over time to nurture a lead or onboard a customer. Unlike a one-off broadcast, a drip delivers the right message at the right interval — for example a welcome series over the first two weeks after signup.

Cold calling is the practice of phoning prospects who have had no prior contact with your company to introduce a product or service and open a sales conversation. It remains a direct outbound channel in B2B sales, though modern practice pairs it with research and multichannel context rather than dialing unqualified lists blindly.

A voicemail drop (or ringless voicemail in some forms) is a feature that lets a rep leave a pre-recorded voicemail message with one click instead of speaking it live each time. When a call reaches voicemail, the rep drops the recording and immediately moves to the next call, saving the time of repeating the same message.

Local presence dialing is the practice of automatically placing outbound calls from a phone number whose area code matches the prospect's location, so the incoming call displays as local. Prospects answer local numbers far more often than unfamiliar out-of-area or toll-free numbers, which raises connect rates.

A power dialer is an outbound calling tool that automatically dials numbers from a list one after another, connecting a live agent only when a call is answered and advancing to the next number on no-answer or voicemail. It dials one line per agent sequentially, eliminating manual dialing time without the compliance risk of dialing multiple lines at once.

A predictive dialer is an automated outbound calling system that dials multiple numbers per agent simultaneously, using statistical models of answer rates and agent availability to predict when a rep will be free and connect a live answer to them. It maximizes agent talk time for large call-center operations but can produce abandoned (dropped) calls when predictions miss.

Interactive Voice Response (IVR) is an automated telephony system that interacts with callers through recorded or synthesized voice prompts and collects input via keypad tones (DTMF) or speech recognition. It routes calls, answers common queries, and gathers information before (or instead of) connecting a live agent.

The WhatsApp Business API (part of the WhatsApp Business Platform) is Meta's programmatic interface that lets businesses send and receive WhatsApp messages at scale through approved software, rather than the manual WhatsApp Business app. It requires business verification, pre-approved message templates for business-initiated conversations, and uses conversation-based pricing.

A sales engagement platform is software that helps sales teams execute and manage outbound and follow-up activity across channels — email, phone, LinkedIn, SMS — from one interface, typically via multichannel sequences, task management, dialing, templates and analytics. It sits on top of the CRM to operationalize the day-to-day outreach a rep performs.

Conversation intelligence is software that records, transcribes and analyzes sales calls and meetings using AI to surface insights — talk-to-listen ratios, topics discussed, competitor mentions, next steps, sentiment and coaching opportunities. It turns unstructured conversations into searchable, analyzable data for reps, managers and revenue teams.

Intent data is behavioral information that signals a company or person is actively researching a product, category or solution — indicating they may be in-market to buy. It includes first-party signals (activity on your own site and content) and third-party signals (content consumption and search behavior across a data provider's network of sites).

Revenue Operations (RevOps) is the practice of aligning the operations, systems, data and processes across sales, marketing and customer success under one function accountable for revenue efficiency. It breaks down the silos between these teams by unifying their tooling, metrics and workflows so the whole revenue engine runs on shared data and a consistent process.