Glossary

Nitrosend has its own vocabulary, and you meet most of it in the left sidebar. This page defines those words in the order you run into them, so you can look up a screen you are staring at rather than guess a search term.

Each entry says what the thing is. Where there is more to know, it links to the page that covers the behaviour in depth.

If you drive Nitrosend through an AI agent, this page is also a translation table: the agent talks about campaigns, flows, lists and segments because those are the same objects you see on screen.

The sidebar

These are the top-level areas, in the order they appear.

Brand switcher

The control at the top of the sidebar that swaps which brand you are working in. Everything below it — campaigns, contacts, templates, domains — belongs to the brand you have selected.

Setup Center

The Setup entry, expanded. Five steps, tracked as a percentage:

• Set up your Brand Kit
• Verify your sending domain
• Choose your plan
• Connect your AI agent
• Import your subscribers

Setup moves around on purpose: it sits above Home while you are getting started, drops to the bottom of the sidebar once the essentials are done, and disappears once everything is complete.

Account, brand, plan

Account is the thing that gets billed and that people log into. Brand sits inside an account: a separate sending identity with its own logo, colors, sending domain, contacts and campaigns. One account can hold several brands, which is how agencies keep clients apart.

Your plan is shown as a label next to your name in the sidebar — Free, Pro, Ultra, or Enterprise. It governs your monthly email allowance and how many brands you can create.

Audiences: contacts, lists, segments and saved views

This is the vocabulary people mix up most, because there are three different ways to group the same contacts and only two of them can be sent to.

Contact — one person you can email. Contacts carry an email address, optional phone, and any extra data you have imported.

Contact list — a group you put people into explicitly. Membership is a decision: someone is on the list because they were imported into it, signed up to it, or was added by hand. The Contacts sub-navigation labels this tab Lists; the page itself is titled Contact Lists. Same thing.

Segment — a group defined by a rule rather than by membership, so it re-evaluates itself. "Everyone who opened something in the last 30 days" is a segment. Add a matching contact tomorrow and they are in it without you doing anything. More in Segments.

Saved view — a filter on the contacts table, saved so you can come back to it. This is the one that catches people out: a saved view is a way of looking at your contacts, not an audience. You cannot send to a saved view. If you want the same rules to become something you can send to, make it a segment. More in Contacts.

Tag — a free-form label you stick on contacts, like vip or july-workshop. Tags are a common ingredient in segment rules.

Custom field — any extra column you brought in with your contacts, usable in segment rules and in personalization.

Subscribed / unsubscribed — whether a contact has opted in to hear from you on a channel. Unsubscribed contacts stay in your account but drop out of sending.

Suppressed — an address Nitrosend will not send to, regardless of lists or segments, because sending to it would damage your deliverability. See Deliverability words.

Campaigns and flows

A campaign goes out once, to an audience you choose. A flow runs continuously, starting for each contact when something triggers it.

Both share the same status words:

• draft — still being written; nothing has gone out.
• scheduled — queued for a future date and time. Campaigns only.
• live — sending now, or in a flow's case, actively running for whoever triggers it.
• paused — stopped part-way; can be resumed.
• completed — finished sending. Campaigns only.
• cancelled — stopped and not resumable.
• archived — filed away, out of your normal lists.

A flow you have edited but not yet published shows unpublished changes next to its status, meaning what is running is not what you are looking at. Go Live is the button that publishes and starts it.

Campaign content locks once a campaign has sent, though you can always rename it. Campaigns covers exactly what stays editable at each status.

Flow steps

Inside a flow, each box on the canvas is a step, added from Add step. Steps are grouped under two headings, Actions (things that happen) and Logic (things that control what happens next).

Actions:

Find Email and Verify Email also appear in the palette, but they are signposts rather than steps you can add here: finding and checking addresses is lead-sourcing work, so clicking either card takes you to Outreach instead of dropping a step into the flow.

Logic:

The email builder

Emails are built from stacked blocks. The type of block decides what you can put in it, which matters because putting the wrong content in a block is a common way to get a design that will not save:

The insert panel splits them into Message blocks, which carry your content, and Structure blocks, which shape the layout.

Message:

Structure:

The builder header shows Saved or Unsaved so you can tell whether your latest edit has been stored.

Merge field — a placeholder like a first name that fills in per recipient when the email is sent.

Brand: who your email comes from

The Brand area holds the sending identity. Its tabs:

Brand Kit — your logo, colors and voice. Contains Company (company name, description, and physical address, which is required in the footer of marketing email by law), Brand Identity (spacing, corner radius and type sizes that give your emails a consistent look), Brand Voice (how your AI agent should write for you), and Social Links.

Sender — the Sender & Testing card, where three fields decide what recipients see:

• From name — the name in the inbox, e.g. your business name.
• From email — the address it comes from.
• Reply-to email — where replies go, if that differs from the From address.

Domains — the domains you are allowed to send from, and their DNS setup. See below.

AI Memory — a free-text note your AI agent reads every time it works on your account: preferences, house style, things to always or never do.

API Keys — credentials for connecting Nitrosend to your own code. Only shown if your role can manage them.

Channels is a related screen holding your SMS numbers. It is not one of the Brand tabs — reach it from the command palette.

Domain verification

Before you can send from a domain you have to prove you own it, by adding DNS records at whoever hosts your domain. Nitrosend shows each required record and whether it is in place. A domain reads Verified once everything checks out, or Needs attention if something is missing or has changed.

The records are grouped into families, named on screen as:

Records prefixed From-domain (From-domain DKIM, From-domain DMARC, and so on) apply to the domain in your From address when that differs from the subdomain you send through.

Activity and the Send Log

Activity is the overview: how much went out and how it performed. The Send Log is the itemised list, one row per message.

Sends are labelled by where they came from — Campaign, Flow, Test, or Transactional (triggered one-to-one mail like a receipt, rather than marketing).

The headline numbers:

• Recipients — how many people a send went to.
• Delivered — accepted by the receiving mail server.
• Opened — the recipient opened it. Approximate by nature, since some mail apps block the measurement.
• Clicked — the recipient clicked a link.

Deliverability words

• Bounce — the message could not be delivered. A permanent bounce means the address is bad; a temporary one may succeed later.
• Complaint — the recipient marked your email as spam. The most damaging outcome, and the reason lists should only contain people who asked to hear from you.
• Unsubscribe — the recipient opted out.
• Suppression — an address Nitrosend refuses to send to, usually after a hard bounce or a complaint. Suppression protects your sender reputation, so an address staying suppressed is the system working.

Inbox

The Agent Inbox sorts incoming replies into five tabs:

• Needs you — a human has to answer this.
• Agent ready — your AI agent has drafted a reply and is waiting for you to approve it.
• Handled — dealt with, by you or by the agent.
• Quarantine — held back as suspicious.
• All threads — everything, unfiltered.

An individual item can also carry a Needs a human tag, marking that one message as something the agent should not answer on its own.

Integrations

An integration is a connection to another tool. They come in a few kinds:

• Email delivery — send through your own provider: Amazon SES, Mailgun, Postmark, Resend, SendGrid.
• Contact and customer sync — keep people in step with a CRM such as Attio or HubSpot.
• Audience migration — bring an existing audience across, for example from Mailchimp.
• Commerce events — pull orders and products from a store like Shopify.

Working through an AI agent

Nitrosend is built to be driven by an AI assistant as well as by hand, and both act on the same objects. When your agent says it is creating a campaign, adding contacts to a list, or defining a segment, it means exactly what those words mean on this page.

Two terms belong to that surface specifically:

• MCP — the protocol your assistant uses to talk to Nitrosend. Setting it up is covered in Integrations.
• Brand Kit and AI Memory — what the agent reads to stay on-voice. See Brand Kit and memory.