Average Ratings 0 Ratings
Average Ratings 8 Ratings
Description
Coldletter is an email design and automation layer that helps teams create, manage, and send product emails without replacing their existing email provider. It connects with delivery services such as SendGrid, Postmark, Amazon SES, Mailgun, Resend, and SparkPost, giving companies flexibility while keeping sending infrastructure intact. The platform includes a visual editor where teams can build templates, add variables, reuse blocks, and preview emails across clients such as Gmail, Outlook, and Apple Mail. Every template is designed to be responsive, accessible, and safe for dark mode by default. Developers can trigger templates through a single API request while Coldletter handles rendering, data merging, routing, retries, suppression, and idempotency. Marketing, lifecycle, design, and product teams can use the platform to manage email content without constantly relying on engineering for every change. Journey automation tools allow users to create workflows based on events, schedules, engagement, attributes, or A/B testing paths. Version control, template diffs, rollbacks, localization, test sends, roles, approvals, and analytics help teams manage production emails with more confidence. Coldletter gives organizations a structured way to build polished product emails while improving collaboration between technical and non-technical teams.
Description
Partner with the email service trusted by developers and marketers for time-savings, scalability, and delivery expertise. The Twilio SendGrid Email API and proprietary Mail Transfer Agent (MTA), intuitive console, powerful features, and email experts make it easy to ensure all your email gets delivered in seconds and without interruption.
Whether you’re sending 100 emails or 100 billion, SendGrid is built to scale, while maximizing inbox placement and protecting your reputation as a trusted sender. Monitor engagement data and optimize deliverability with our Deliverability Insights dashboard. Integrate with our RESTful APIs and SMTP in minutes, with sample code libraries available in 7 languages, interactive docs, templates, and more.
API Access
Has API
API Access
Has API
Screenshots View All
No images available
Integrations
Activepieces
Agile CRM
CallTrackingMetrics
Connectio.io
CrossEngage
Fastgen
Funnelish
GrowthHackers Workflow
Humanic
Incredible
Integrations
Activepieces
Agile CRM
CallTrackingMetrics
Connectio.io
CrossEngage
Fastgen
Funnelish
GrowthHackers Workflow
Humanic
Incredible
Pricing Details
$0
Free Trial
Free Version
Pricing Details
$19.95 per month
Free Trial
Free Version
Deployment
Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook
Deployment
Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook
Customer Support
Business Hours
Live Rep (24/7)
Online Support
Customer Support
Business Hours
Live Rep (24/7)
Online Support
Types of Training
Training Docs
Webinars
Live Training (Online)
In Person
Types of Training
Training Docs
Webinars
Live Training (Online)
In Person
Vendor Details
Company Name
Optosoftware inc.
Founded
2025
Country
Canada
Website
coldletter.com
Vendor Details
Company Name
Twilio SendGrid
Founded
2009
Country
United States
Website
sendgrid.com/en-us
Product Features
Email Marketing
A/B Testing
Artificial Intelligence
Auto-Responders
CAN SPAM Compliance
Customer Surveys
Drip Campaigns
Dynamic Content
Event Triggered Email
Image Library
Landing Pages/Web Forms
Mailing List Management
Mobile Optimized Emails
Reporting/Analytics
Subscriber Management
Template Management
WYSIWYG Email Editor
Email Template Design
A/B Testing
Code From Scratch
Drag & Drop Editing
Image Library
Import HTML Code
Mobile-Friendly / Responsive
Potential Issue Identification
Premade Templates
Proofing
Reporting / Analytics
Text Editor
Theme Editor
Product Features
eCommerce Marketing
AB Testing
Abandoned Cart Email
Analytics / ROI Tracking
Customer Data Profiles
Dynamic Content
Email Marketing
Email Personalization
Facebook Ads
Google Ads
Product Recommendations
Push Notifications
Retargeting
SMS Marketing
Search Marketing
Segmentation
Signup Forms & Popups
Social Marketing
Triggered Emails
Website Visitor Tracking
Email Deliverability
DMARC Analytics
Deliverability Alerts
Deliverability Reporting
Email Address Verification
Email Content Testing
Email Previewing
IP Blacklist Monitoring
Inbox Placement Testing
Reputation Reporting
Email Management
Data Recovery
Email Archiving
Email Deletion
Email Discovery
Email Monitoring
Email Recall
Queue Manager
Response Management
Routing
Shared Inboxes
Signature Management
Spam Blocker
Whitelisting / Blacklisting
Email Marketing
A/B Testing
Artificial Intelligence
Auto-Responders
CAN SPAM Compliance
Customer Surveys
Drip Campaigns
Dynamic Content
Event Triggered Email
Image Library
Landing Pages/Web Forms
Mailing List Management
Mobile Optimized Emails
Reporting/Analytics
Subscriber Management
Template Management
WYSIWYG Email Editor
Email Template Design
A/B Testing
Code From Scratch
Drag & Drop Editing
Image Library
Import HTML Code
Mobile-Friendly / Responsive
Potential Issue Identification
Premade Templates
Proofing
Reporting / Analytics
Text Editor
Theme Editor
Email Testing
A/B Testing
Accessibility Testing
DMARC Analytics
Deliverability Rates
HTML Validation
IP Blacklist Checking
Improvement Recommendations
Pre-Send Email Testing
Preview Across Browsers & Devices
Reporting / Analytics
Sender Reputation Scoring
Spam Testing
Email Tracking
A/B Testing
Audience Segmentation
Campaign Management
Event-Based Notifications
Location Tracking
Team Management
Email Verification
Bulk Email Verification
Catch-all Server Detection
Disposable Email Detection
Domain Check
Mail Server Validation
Single Email Verification
Spam Trap Detection
Syntax Check
Marketing Automation
A/B Testing
Analytics / ROI Tracking
Artificial Intelligence
Content / Blogging Platform
Customizable CTAs
Drip Campaigns
Dynamic Content
Landing Pages / Web Forms
Lead Scoring
Sales Intelligence
Search Marketing
Segmentation
Social Marketing
Website Visitor Tracking
Transactional Email
A/B Testing
Contact Database
Dynamic Content
Email Monitoring
Mailing List Management
Reporting/Analytics
Spam Check
Template Management
Alternatives
No Alternatives