Documentation

Set up your account and send your first campaign in under 10 minutes

Understanding the NimbusOS dashboard, navigation, and core concepts

Import contacts from CSV, CRM, or use our enrichment tools

Step-by-step guide to launching an email campaign

Connect Gmail, Outlook, or SMTP accounts for sending

Gradually increase sending volume to build sender reputation

Create and manage reusable email templates with variables

AI-powered send time optimization for maximum engagement

Bring your own SMTP server for custom sending infrastructure

One-time blasts, drip sequences, and A/B testing campaigns

Build multi-step automated email sequences with conditions

Use dynamic variables like {{first_name}} for personalized outreach

Track opens, clicks, replies, bounces, and conversion metrics

Add, edit, tag, and organize your contact database

Create dynamic segments based on contact attributes and behavior

Automatically enrich contacts with company data, social profiles, and more

Find and merge duplicate contacts to keep your database clean

Verify email addresses before sending to reduce bounces

Understanding inbox placement, sender reputation, and authentication

Configure email authentication records for your domain

Automatic bounce classification and list hygiene

Analyze why emails land in spam and get actionable fixes

Monitor deliverability across Gmail, Outlook, Yahoo, and more

Understanding your analytics dashboard and key metrics

Detailed performance reports for individual campaigns

AI-powered reply classification and sentiment analysis

Test subject lines, content, and send times for optimization

Connect NimbusOS with your existing tech stack

Sync with HubSpot, Salesforce, and other CRMs

Connect Instantly, Smartlead, Lemlist, and ReachInbox

Use your own API keys for AI, email validation, and enrichment

Set up webhooks to receive real-time event notifications

API authentication using JWT tokens and API keys

CRUD operations for contacts, tags, and custom fields

Create, manage, and monitor campaigns programmatically

Configure and manage webhook endpoints

API rate limits and best practices for production usage

Manage your profile, workspace, and security settings

Invite team members, assign roles, and manage permissions

Compare plans, upgrade, or manage your subscription

Understanding usage limits, overages, and quota management