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Average Ratings 0 Ratings

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ease
features
design
support

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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

We have gathered your feedback and ideas to develop innovative tools that enhance your experience. Now, crafting tailored emails and newsletter templates has never been easier, more intuitive, or quicker. Explore all the exciting new features available. MailStyler stands out as the only editor that enables you to adjust images within frames, allowing you to select exactly which part of the image you'd like to display. You have the freedom to resize the frames as you desire, focusing on your content, all directly from your newsletter without needing any external applications. Modify your images in a highly responsive, real-time interface, and see your changes instantly. Unlike traditional newsletter editor default blocks, which tend to be fixed and unchangeable, the new dynamic blocks in MailStyler offer full customization options. You can choose a block and modify it to your liking, whether that means moving elements around, removing items, or adding new ones from your own collections or external software. Moreover, any new blocks you create will automatically convert to HTML code with inline CSS styling, ensuring that your newsletters are consistently displayed with perfect formatting across all platforms. With these capabilities, your newsletter design experience is now more flexible and creative than ever before.

API Access

Has API

API Access

Has API

Screenshots View All

No images available

Screenshots View All

Integrations

Amazon SES
IntelliClick
Postmark
SendGrid

Integrations

Amazon SES
IntelliClick
Postmark
SendGrid

Pricing Details

$0
Free Trial
Free Version

Pricing Details

$99
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

MailStyler 2

Country

United States

Website

www.newslettercreator.com/software-features/

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

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

Alternatives

No Alternatives

Alternatives

Direct Mail Reviews

Direct Mail

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