> ## Documentation Index > Fetch the complete documentation index at: https://docs.autocampaign.ai/llms.txt > Use this file to discover all available pages before exploring further. # Glossary > Plain-English meanings for the words you will see in Autocampaign AI. Every term below is explained in one or two sentences, with a link to the guide that covers it. Use your browser's find (`Ctrl F` or `⌘ F`) to jump to a word. ## Your account ### Workspace Your company's own space in Autocampaign AI. It holds your contacts, messages, team and settings. The app sometimes calls it your **organization**. See [Create your workspace](/getting-started/create-workspace). ### Member A person on your team who can sign in to your workspace. See [Invite your team](/getting-started/invite-team). ### Role What a member is allowed to see and do. Owners and Admins can change almost everything. Other roles are more limited. See [Users and roles](/getting-started/users-roles). ### Seat One member's place in your workspace. Plans include a set number of seats. See [Plans and trials](/billing/plans-and-trials). ### Plan The package you pay for. It sets your monthly credits and limits. See [Plans and trials](/billing/plans-and-trials). ### Trial A free period on a new workspace, with no card needed. See [Plans and trials](/billing/plans-and-trials). ### Credits What sending messages, making calls and using AI costs inside your plan. When credits run low, sending pauses until you top up or your plan renews. See [Credits and usage](/billing/wallet-billing). ## Sending and receiving ### Channel A way to reach people: SMS (texting), email, WhatsApp or calls. See [Channels](/channels/overview). ### Provider The company that carries your messages behind the scenes, such as Twilio or Telnyx for texting. You connect one to a channel. See [SMS channel](/channels/sms). ### Sender The name and email address your emails come from, such as "Acme Dental \<[hello@acmedental.com](mailto:hello@acmedental.com)>". See [Email senders](/providers/email-senders). ### Verified domain The part of your email address after the @, once you have proved you own it. You need one before you can send email. See [Email domains](/providers/email-domains). ### DNS record A setting in the control panel of the company where you bought your website address (for example GoDaddy, Namecheap or Cloudflare). Autocampaign AI asks you to add a few of these to verify a domain. Your web person can do this in minutes. ### Opt-in A person's permission to receive your messages. Texting someone without it breaks carrier rules. See [Opt-in](/compliance/opt-in). ### Opt-out When a person asks to stop hearing from you, usually by replying **STOP**. Autocampaign AI handles this automatically. See [Opt-out](/compliance/opt-out). ### A2P 10DLC The registration US carriers require before a business can send texts from a normal local number. It takes a few days and is done once. See [A2P 10DLC](/compliance/a2p-10dlc). ### Toll-free verification The equivalent check for numbers starting 800, 888 and similar. See [Toll-free numbers](/compliance/toll-free). ### Quick message A saved reply you can insert into a conversation with a couple of keystrokes. See [Quick messages](/campaigns/quick-messages). ## People ### Contact One person in your list, with their phone number, email and details. See [Contacts](/contacts/overview). ### Tag A label you stick on contacts, such as "VIP" or "Spring promo", so you can find them later. See [Tags](/contacts/tags). ### Custom field An extra detail you want to store on every contact that the app does not have a box for, such as "Vehicle" or "Renewal date". See [Custom fields](/contacts/custom-fields). ### Segment A group of contacts, chosen by hand or by rules such as "everyone tagged VIP who lives in Texas". Campaigns are sent to segments. See [Segments](/contacts/segments). ### Merge tag A placeholder such as `{{first_name}}` that is swapped for each contact's own details when a message is sent. See [Templates](/campaigns/templates). ## Growing your list ### Join keyword A word people text to your number to sign up, as in "Text JOIN to 555-0100". See [Join keywords](/growth/join-keywords). ### Join link A sign-up page or web form with its own link that adds people to your list. See [Join links](/campaigns/join-links). ### Lead form A form you build here and put on your website or share by link. Each entry becomes a contact. See [Lead forms](/growth/lead-forms). ### Chat widget The chat button on your website. Visitors' messages land in your Inbox. See [Website chat](/settings/chat-widget). ## Messaging at scale ### Campaign One message sent to many contacts at once, now or at a scheduled time. See [Campaigns](/campaigns/overview). ### Template A message you write once and reuse. See [Templates](/campaigns/templates). ### Sequence A series of messages sent to each contact over days or weeks, such as a welcome text today and an email in three days. See [Sequences](/campaigns/sequences). ### Workflow A rule that runs by itself: when something happens, do something. For example, when a form is submitted, wait a day, then send a follow-up. See [Workflow builder](/automation/workflow-builder). ### AI Employee An assistant you set up to reply to customers in your Inbox, following the instructions and documents you give it. See [AI Employees](/automation/ai-employees). ### Knowledge base The documents, web pages and notes an AI Employee reads so it answers with your information. See [Knowledge base](/automation/knowledge-base). ## Sales and appointments ### Opportunity A possible sale or job you are tracking, such as "Smith kitchen remodel". See [Opportunities](/crm/opportunities). ### Pipeline The set of steps a sale goes through, from first contact to won or lost. See [Pipelines](/crm/pipelines). ### Stage One step in a pipeline, such as "Quote sent". See [Pipelines](/crm/pipelines). ### Meeting type A kind of appointment people can book with you, such as "15-minute intro call", with its own length and location. See [Meeting types](/scheduling/meeting-types). ### Availability The hours when people are allowed to book you. See [Availability](/scheduling/availability). ## Connecting other tools ### Integration A connection between Autocampaign AI and another tool you use, such as Google Calendar. See [Calendar integrations](/scheduling/calendar-integrations). ### API key A special password that lets another program use your workspace. Only create one if a developer asks for it. See [API keys](/developers/api-keys). ### Webhook A way for Autocampaign AI to notify another program the moment something happens, such as a new contact. Set up by developers. See [Webhooks](/developers/webhooks). Check the FAQ, or email [support@autocampaign.ai](mailto:support@autocampaign.ai).