Changelog

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SMS Sending 💬

• SMS API — Send SMS to 200+ countries with a single POST request using the same API key as email
• Batch SMS — Send up to 100 messages in a single API call with per-message customization
• SMS Templates — Create reusable templates with ##variable## syntax and DLT registration support
• SMS Contacts — Manage SMS contact lists with tags, search, CSV import/export, and bulk operations
• SMS Logs — Full delivery logs with status, search, and time range filters
• Pay-as-you-go — $0.006 per SMS from your wallet balance. 10 free SMS per organization

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Dashboard

• SMS Section — New sidebar section with Messages, Templates, Contacts, and Logs pages
• Sidebar Sections — Dashboard sidebar reorganized into Email, Marketing, SMS, and Configure sections
• Breadcrumb Navigation — Improved breadcrumbs for all SMS sub-pages

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Pricing

• SMS Add-on — SMS pricing added to the pricing page with pay-as-you-go details
• Email Overage Add-on — Email overage pricing ($0.40/1,000) now displayed on pricing page

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Documentation

• SMS Guide — Comprehensive guide covering sending, batch, templates, contacts, and billing
• SMS API Reference — Full API docs for send, batch send, get, and list SMS endpoints

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AI Email Creator with Brand Scraping

• Website Brand Scraping — Paste your website URL and Uno AI automatically extracts your logo, brand colors, fonts, social links, and key images
• S3 Image Hosting — Scraped logos and brand images are uploaded to S3 for permanent, reliable URLs in your emails
• Branded Email Generation — AI creates truly unique, production-ready HTML emails using your real brand assets — no more generic templates or placeholder images
• Email Creator Panel — New “Create an email” card on the Uno AI page with website URL input and description field
• Unique Every Time — AI varies color schemes, layouts, typography, and decorative elements per request instead of repeating the same design

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Improvements

• No Placeholder Images — AI now uses solid CSS backgrounds, gradients, or real S3-hosted brand images instead of external placeholder services
• SSRF Protection — Brand scraping blocks internal/private URLs for security
• Webhooks Table — Improved cell padding for better readability

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Visual Email Editor ✨

• 27 Block Types — Text, Image, Button, Divider, Spacer, Heading, Video, Social, HTML, Columns, Hero, Footer, Logo, Quote, List, Countdown, Table, Accordion, Tabs, Code, Map, Rating, Progress, Avatar, Badge, Callout, and more
• Drag & Drop — Reorder blocks by dragging the grip handle, or click to add from the block palette
• Live Preview — Toggle between desktop and mobile preview to see exactly how your email will render
• Theme Panel — Global styling controls for fonts, colors, spacing, and background — applied across all blocks
• Properties Panel — Fine-tune each block’s content, alignment, padding, colors, and link settings
• Floating Overlays — Block palette, properties, and theme panels float over the canvas for a distraction-free editing experience
• HTML Tab — View the generated HTML source with syntax highlighting
• Auto-Save — Changes are automatically saved every 2 seconds with undo/redo support (50 history states)
• Keyboard Shortcuts — Cmd+S to save, Cmd+Z to undo, Cmd+Shift+Z to redo
• Prebuilt Templates — Start from a professionally designed template and customize it in the visual editor

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Uno AI — Your AI-Powered Email Assistant 🤖

• 45 Tools — Send emails, create templates, manage contacts, verify domains, check deliverability, debug issues, and more — all from a single chat
• Full Dashboard Access — Uno reads your real account data (emails, domains, analytics, billing) and takes real actions on your behalf
• Template Designer — Describe the email you want and Uno generates production-ready, responsive HTML templates
• Image & Code Analysis — Paste screenshots or code snippets directly into the chat for instant debugging
• Smart Suggestions — Context-aware prompts based on your account status
• Free Trial — 20 AI messages per session on the Free plan. Paid plans get unlimited access.

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Sidebar Redesign

• Uno AI is now the first item in the dashboard sidebar
• Sidebar defaults to expanded for better navigation

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Email Deliverability Improvements

• RFC 8058 Headers — Added List-Unsubscribe and List-Unsubscribe-Post headers to system emails
• Gmail Reputation — Added Feedback-ID header for better sender reputation tracking
• ISP Traffic Shaping — Per-ISP delivery limits on the dedicated email server for improved inbox placement

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Enterprise Contact Import 📥

• CSV Import - Upload CSV files with automatic header detection (email, first_name, last_name, metadata)
• 1M+ Scale - Import millions of contacts with chunked uploads and parallel processing
• Duplicate Handling - Duplicate emails are automatically skipped without errors
• Large File Support - Upload CSV files up to 100MB in a single request
• Chunked Uploads - Large imports are split into 10,000-contact chunks with 5x parallel processing

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Audience Management 🗂️

• Cascade Delete - Deleting an audience now properly removes all associated contacts
• Bulk Delete - Bulk delete audiences with full contact cleanup
• Accurate Counts - Contact counts now reflect actual audience membership

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Improvements

• Better Error Messages - Import errors now show clear, human-readable messages instead of raw objects
• Faster Bulk Inserts - Database batch size increased for faster contact creation

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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 📧

• Email Broadcasts - 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