AI-native email platform for Claude, ChatGPT and any agent
AI assistant with its own phone number that answers calls, remembers interactions, and manages tasks
Stage
Startup
Not given
Founded
2025
Not given
Based in
US
Not given
Pricing model
Not given
Paid
Pricing
Free: $0 (8,000 emails then 500/month). Pro: $20/month (20,000 emails/month). Ultra: $100/month (125,000 emails/month). Enterprise: $300/month (500,000-4,000,000+ emails/month). Extra emails: $0.19 per 100 (Pro), $0.15 per 100 (Ultra). Dedicated IPs: $50/IP/month (Ultra and Enterprise).
Basic: 36¢/min plus $2.50 monthly service fee (under $10/month for 20 minutes of use). Standard: 30¢/min plus $2.50 monthly service fee (about $20/month for an hour of use). Growth: Contact Sales for custom pricing. Users can set their own monthly spending limit.
Key features
Visual flow builder with event triggers and conditional splits
AI-powered content generation with brand voice matching
Multi-brand management with isolated sender reputation
Unlimited contacts on all plans
Dynamic segments and list management with CSV import
SMS campaigns via Twilio integration
Real-time analytics with AI-powered insights
MCP, REST API, SDK, and CLI access on all plans
Bring-your-own sending and AI infrastructure keys
Answers and makes calls
Blocks spam calls
Remembers conversations and interactions
Manages appointments and reminders
Joins meetings and takes notes
Captures and recalls ideas
Provides personalized daily updates
Researches and coordinates tasks
Call forwarding integration
Conditional and unconditional call forwarding
What makes it different
Built by email industry veterans with 6 billion emails sent across previous companies
AI agents operate email with human approval gates by default
Integrated with open-source Email Marketing Bible skill with 908 sources
MCP-first architecture with API, SDK and CLI options
No per-contact pricing; unlimited contacts on every plan
Always available second brain that never stops working
Remembers every interaction automatically
Captures action items and decisions from calls and meetings
Pay only for what you use with customizable spending limits
Serves US and Canada with phone number integration
Nitrosend