Average Ratings 0 Ratings
Average Ratings 0 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
Completely free for up to 500 contacts with no limitations on features or support, this platform offers a user-friendly Drag & Drop email designer featuring over 70 customizable design blocks. Each account comes equipped with ready-to-use email templates, 1,000 email credits, and 10 SMS credits, providing ample resources for effective communication. Unlike competitors such as Klaviyo, Mailchimp, and Sendgrid, our sending servers are based in the EU, ensuring that your data remains within European borders. Additionally, you have the option to include a "Do Not Track" feature in your sign-up forms to respect user privacy. By recommending Sensorpro, you can earn lifetime revenue, and the platform offers all the necessary tools for managing an agency account. Whether you're a small business or managing a high volume of emails, our independent infrastructure is designed to scale and handle up to 1 million emails daily without relying on third-party services like Amazon or Sendgrid, providing both reliability and flexibility for all users. Furthermore, our commitment to customer support ensures that users feel supported throughout their experience.
API Access
Has API
No
API Access
Has API
No
Screenshots View All
No images available
Integrations
Amazon SES
Yes
BigCommerce
No
KonnectzIT
No
Postmark
Yes
SendGrid
Yes
Shopify
No
Ultra Commerce
No
Integrations
Amazon SES
No
BigCommerce
Yes
KonnectzIT
Yes
Postmark
No
SendGrid
No
Shopify
Yes
Ultra Commerce
Yes
Pricing Details
$0
Free Trial
No
Free Version
Yes
Pricing Details
No price information available.
Free Trial
No
Free Version
Yes
Deployment
Web-Based
Yes
On-Premises
No
iPhone App
No
iPad App
No
Android App
No
Windows
No
Mac
No
Linux
No
Chromebook
No
Deployment
Web-Based
Yes
On-Premises
No
iPhone App
No
iPad App
No
Android App
No
Windows
Yes
Mac
No
Linux
No
Chromebook
No
Customer Support
Business Hours
No
Live Rep (24/7)
No
Online Support
Yes
Customer Support
Business Hours
Yes
Live Rep (24/7)
No
Online Support
Yes
Types of Training
Training Docs
Yes
Webinars
No
Live Training (Online)
No
In Person
No
Types of Training
Training Docs
No
Webinars
No
Live Training (Online)
No
In Person
No
Vendor Details
Company Name
Optosoftware inc.
Founded
2025
Country
Canada
Website
coldletter.com
Vendor Details
Company Name
Sensorpro
Founded
2001
Country
Ireland
Website
sensorpro.eu
Product Features
Email Marketing
A/B Testing
No
Artificial Intelligence
No
Auto-Responders
No
CAN SPAM Compliance
No
Customer Surveys
No
Drip Campaigns
No
Dynamic Content
No
Event Triggered Email
No
Image Library
No
Landing Pages/Web Forms
No
Mailing List Management
No
Mobile Optimized Emails
No
Reporting/Analytics
No
Subscriber Management
No
Template Management
No
WYSIWYG Email Editor
No
Email Template Design
A/B Testing
No
Code From Scratch
No
Drag & Drop Editing
No
Image Library
No
Import HTML Code
No
Mobile-Friendly / Responsive
No
Potential Issue Identification
No
Premade Templates
No
Proofing
No
Reporting / Analytics
No
Text Editor
No
Theme Editor
No
Product Features
Email Marketing
A/B Testing
No
Artificial Intelligence
No
Auto-Responders
No
CAN SPAM Compliance
No
Customer Surveys
No
Drip Campaigns
No
Dynamic Content
No
Event Triggered Email
No
Image Library
No
Landing Pages/Web Forms
No
Mailing List Management
No
Mobile Optimized Emails
No
Reporting/Analytics
No
Subscriber Management
No
Template Management
No
WYSIWYG Email Editor
No
SMS Survey
Alerts / Notifications
No
Analytics / Reporting
No
Audience Targeting
No
Campaign Management
No
Contact Management
No
Customizable Templates
No
Keyword Tracking
No
MMS
No
Mass Texting
No
Message Personalization
No
Scheduled Messaging
No
Survey Builder
No
Template Management
No
Survey
Custom Survey URLs
No
Data Analysis Tools
Yes
Email Marketing
Yes
Mobile Survey
Yes
Offline Response Collection
No
Paper Survey
No
Question Branching
Yes
Question Library
No
Site Intercept Survey
No
Skip Logic
Yes
Supports Audio / Images / Video
Yes