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Average Ratings 0 Ratings

Total
ease
features
design
support

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Write a Review

Description

The Blocks Edit model offers the benefits of a headless CMS with significantly reduced code and setup time. It eliminates the need for server tools and provides a drag-and-drop interface with complete design flexibility. You can use your HTML design and invite others to collaborate on reviewing, editing, and building your web pages and email campaigns. By following best practices for user experience and accessibility, you can ensure a smooth user journey. Connect your tools and workflows using standard web protocols to streamline your processes and consolidate your web and email content production into a single system. Import your HTML design to instantly gain editing options for your content. Additionally, take advantage of the first-of-its-kind visual theme editor to set up drag-and-drop components, enhancing the overall design experience. The intuitive point-and-click, drag-and-drop interface requires no formal training, making it accessible to anyone. This allows users to review, comment, and make necessary changes to content effortlessly.

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.

API Access

Has API No 

API Access

Has API No 

Screenshots View All

Screenshots View All

No images available

Integrations

ActiveCampaign Yes 
Amazon S3 Yes 
Amazon SES No 
Google Cloud Storage Yes 
Iterable Yes 
Klaviyo Yes 
Okta Yes 
OneLogin Yes 
Postmark No 
Salesforce Marketing Cloud Account Engagement Yes 
SendGrid No 

Integrations

ActiveCampaign No 
Amazon S3 No 
Amazon SES Yes 
Google Cloud Storage No 
Iterable No 
Klaviyo No 
Okta No 
OneLogin No 
Postmark Yes 
Salesforce Marketing Cloud Account Engagement No 
SendGrid Yes 

Pricing Details

$25.00/month
Per user
Free Trial Yes 
Free Version Yes 

Pricing Details

$0
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 No 
Mac No 
Linux No 
Chromebook No 

Customer Support

Business Hours Yes 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Types of Training

Training Docs Yes 
Webinars Yes 
Live Training (Online) Yes 
In Person No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Vendor Details

Company Name

Blocks Edit

Founded

2017

Country

United States

Website

blocksedit.com

Vendor Details

Company Name

Optosoftware inc.

Founded

2025

Country

Canada

Website

coldletter.com

Product Features

Content Management

Audio Content No 
Customizable Templates Yes 
Document Indexing No 
E-forms Yes 
Full Text Search No 
Image Editor No 
SEO Management Yes 
Text Editor Yes 
Version Control Yes 
Video Content No 
Website Management Yes 

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 Yes 
Mailing List Management No 
Mobile Optimized Emails No 
Reporting/Analytics No 
Subscriber Management No 
Template Management Yes 
WYSIWYG Email Editor Yes 

Email Template Design

A/B Testing No 
Code From Scratch Yes 
Drag & Drop Editing Yes 
Image Library No 
Import HTML Code Yes 
Mobile-Friendly / Responsive Yes 
Potential Issue Identification No 
Premade Templates No 
Proofing Yes 
Reporting / Analytics No 
Text Editor Yes 
Theme Editor Yes 

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 

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