Core concepts

Before diving into individual features, it helps to understand how Sendra's core objects relate to each other.

Workspaces

A workspace is the top-level container for everything in Sendra. Each workspace has its own contacts, campaigns, lists, Amazon SES credentials, verified domains, and team members.

Most users have one workspace. If you manage email for multiple brands or clients, you can create separate workspaces to keep everything isolated.

Contacts

A contact is someone you send email to. Every contact has an email address and can have custom properties (like firstName, company, or plan), tags, and list memberships.

Contacts can be added manually, imported from CSV, or created through signup forms and the API.

Lists

A list is a named group of contacts. You use lists to organize your audience and target campaigns. Examples: "Newsletter subscribers," "Beta users," "Enterprise customers."

Lists support different opt-in modes (single or double opt-in) and can have auto-rules that automatically add contacts based on conditions.

Campaigns

A campaign is a single email you send to a group of contacts. Each campaign has a subject line, sender identity, email content, and an audience (all contacts, a specific list, or a list with exclusions).

Campaigns can be sent immediately or scheduled for a future time. After sending, Sendra tracks opens, clicks, bounces, and complaints.

Events

An event is something that happens — a contact opens an email, clicks a link, submits a form, or triggers a custom event from your app via the API. Events power rules and automation.

Rules

A rule is an "if this, then that" automation. When an event occurs and conditions are met, Sendra executes an action — like adding a tag, moving a contact to a list, or updating a property.

How they connect

Workspace
├── Contacts ── Tags, Properties
│   └── List memberships
├── Lists
├── Campaigns ── Sends ── Events (opens, clicks, bounces)
├── Forms ── Submissions → Contacts
└── Rules ── Events → Actions

Every object belongs to a workspace. Contacts join lists, campaigns target lists, sends generate events, and rules react to events. This creates a loop: send → track → react → send better.