Changelog

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Unlimited Domains 🌐

• All Plans - Every plan now includes unlimited sending domains, including the Free tier
• No Upgrade Walls - Add as many domains as you need without hitting plan limits
• Simplified Pricing - Domains removed as a gating factor — emails and contacts remain the usage gates

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Anti-Abuse Rate Limit 🛡️

• 10 Domains/Hour - Soft rate limit on domain creation to prevent abuse (no limit on total domains)
• 429 Response - Clear error message when rate limit is exceeded

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Docs & Branding

• Updated Rate Limits - New “Domain Creation Rate Limit” section in docs
• Updated Logo - Docs now show the current Unosend logo

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API Playground 🛝

• Interactive API Tester - Test any Unosend API endpoint directly from your dashboard
• 35 Endpoints - Full coverage across Emails, Contacts, Domains, Audiences, Webhooks, Templates, and Broadcasts
• Pre-filled Bodies - Every POST/PATCH endpoint comes with realistic example request bodies
• Domain Auto-Fill - Select a verified domain and the from field updates automatically
• Persistent API Key - Save your API key to the browser so you don’t have to paste it every time
• cURL Export - Copy the equivalent cURL command with one click
• Live Response - See status codes, response time, headers, and full JSON response
• Resource ID Support - GET/PATCH/DELETE by ID with a dedicated input field

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Email Search Fix 🔍

• Recipient Search - Email search now correctly filters by recipient address (to_emails)
• Previously, searching by a recipient email returned zero results — now fixed for both API and SMTP emails

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Gender Detection 🎯

• Free & Unlimited - Detect gender from names and emails at no extra cost
• Smart Extraction - Automatically extracts first name from email addresses
• Confidence Scores - Get confidence scores (0-100%) for each detection

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Contact Enrichment API

• POST /api/v1/contacts/enrich - New endpoint for gender detection
• Single or Batch - Enrich single emails/names or up to 1,000 at once
• Audience Enrichment - Enrich all contacts in an audience with one call
• Auto-Update - Optionally save detected gender to contact records

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Import Enhancement

• enrich_gender=true - Add to CSV imports to auto-detect gender
• Enrichment Stats - Response includes male/female/unknown counts

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Database

• gender - New field on contacts (male, female, unknown)
• gender_confidence - Confidence score 0-100
• gender_cache - Caching table for faster repeat lookups

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Use Cases

• Personalized Greetings - “Dear Mr. Smith” or “Hi Maria”
• Segmentation - Target campaigns by gender
• Analytics - Understand audience demographics

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Broadcasts 📧

• Marketing Emails - Send newsletters, announcements, and campaigns to your audiences
• Visual Editor - Drag-and-drop email builder with Visual/Code toggle
• Template Support - Start from existing templates or create from scratch
• Audience Targeting - Send to specific audiences or contact lists
• Test Emails - Preview broadcasts by sending test emails before launch
• Scheduling - Schedule broadcasts to send at a specific time
• Analytics - Track opens, clicks, bounces, and unsubscribes

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Broadcast Sending

• Unlimited broadcasts — not counted against your monthly email quota
• Broadcasts are gated by contact limits, not email limits
• Contact limits scale with your plan tier (1,000 to 500,000+)

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Dashboard

• Broadcasts Page - New /broadcasts page to manage all campaigns
• Broadcast Editor - Full-featured editor at /broadcasts/editor
• Usage Tracking - Broadcast usage shown in Settings → Usage
• Sidebar Navigation - Broadcasts added under Emails section

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API Endpoints

• GET /api/dashboard/broadcasts - List all broadcasts
• GET /api/dashboard/broadcasts/:id - Get broadcast details
• POST /api/dashboard/broadcasts - Create broadcast
• PUT /api/dashboard/broadcasts/:id - Update broadcast
• POST /api/dashboard/broadcasts/:id/send - Send broadcast
• POST /api/dashboard/broadcasts/:id/test - Send test email

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Email Validation 🛡️

• Single Email Validation - Validate individual email addresses in real-time
• Bulk Validation - Upload CSV or paste lists to validate up to 100,000 emails at once
• Comprehensive Checks - Syntax, MX records, mailbox existence, disposable, and role-based detection

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Validation Checks

• Syntax Validation - RFC-compliant email format check
• MX Record Check - Verify domain has valid mail servers
• Mailbox Verification - Check if mailbox actually exists
• Disposable Detection - Identify temporary/throwaway email addresses
• Role-Based Detection - Flag addresses like info@, support@, admin@
• Provider Detection - Identify Gmail, Outlook, Yahoo, and other providers

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Dashboard

• Validation Page - New /validation page for single and bulk validation
• Validation History - Track all validation transactions at /validation/history
• Credit System - Free: 1,000 credits, Pro: 100,000 credits/month ($29/mo)
• Export Results - Download validation results as CSV

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API Endpoints

• POST /v1/emails/validate - Validate a single email address
• POST /v1/emails/validate/bulk - Validate multiple emails in bulk

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Deliverability Improvements

• Multi-IP Sending - Emails now route through both IPv4 and IPv6 for better inbox placement
• Enhanced ISP Throttling - Smart rate limiting per provider (Gmail, Outlook, Yahoo)
• Real-time Delivery Tracking - More accurate delivery status with instant bounce detection
• Enterprise IP Rotation - Dedicated IPs for enterprise customers with round-robin delivery

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Reliability

• Improved Bounce Handling - Faster bounce detection and status updates
• Better Gmail/Microsoft Delivery - IPv6 support improves delivery to major providers

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New Features

• Inbound Email Processing - Receive and parse incoming emails with full attachment support
• Email Tracking - Track opens and clicks with detailed analytics
• Team Workspaces - Collaborate with team members across multiple workspaces
• Metrics API - Get detailed email analytics and performance metrics
• CLI Tool - New command-line interface for managing emails from the terminal

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Improvements

• Better Webhook Reliability - Improved retry logic with exponential backoff
• Faster Domain Verification - DNS checks now run every 30 seconds
• Enhanced Error Messages - More descriptive error codes and messages

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Bug Fixes

• Fixed issue where CC recipients weren’t receiving emails in some cases
• Resolved template variable parsing for nested objects
• Fixed timezone handling in scheduled emails

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Improvements

• Improved Deliverability - Better handling of bounces and complaints
• API Response Times - 40% faster response times on email send endpoint

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Bug Fixes

• Fixed issue with special characters in subject lines
• Resolved attachment size validation errors
• Fixed domain verification status caching

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Initial Release

• Email Sending API - Send transactional emails
• Domain Management - Add and verify sending domains with SPF, DKIM, DMARC
• API Keys - Secure authentication with un_ prefixed keys
• Webhooks - Real-time event notifications for email delivery, opens, clicks
• Templates - Create and manage reusable email templates
• Audiences & Contacts - Manage subscriber lists and contact data
• SDKs - Official SDKs for Node.js, Python, Go, PHP, and Ruby

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Developer Experience

• Interactive API documentation
• Code examples in multiple languages
• Sandbox mode for testing