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Average Ratings 0 Ratings

Total
ease
features
design
support

No User Reviews. Be the first to provide a review:

Write a Review

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

Transendly serves as a platform for email localization, enabling teams to execute multilingual campaigns across anywhere from 5 to 50 markets effectively. Users can import their primary HTML emails, designate translators for each specific locale, and then review and approve the translations before exporting the final HTML, which remains production-ready and retains all ESP tokens without the need for manual reformatting. This service is compatible with major email service providers such as SendGrid, Klaviyo, Mailchimp, Brevo, Postmark, and ActiveCampaign. It offers automatic protection for ESP tokens, seamlessly handling formats like Liquid, Handlebars, merge tags, and Django tags. Additionally, it supports right-to-left languages including Arabic and Hebrew, and provides AI-assisted translation where tokens are never shared with AI systems. A free 21-day trial is available for users, requiring no credit card information for sign-up. This ensures that teams can fully explore the platform's capabilities before committing to a subscription.

API Access

Has API No 

API Access

Has API No 

Screenshots View All

No images available

Screenshots View All

No images available

Integrations

Amazon SES Yes 
Postmark Yes 
SendGrid Yes 

Integrations

Amazon SES No 
Postmark No 
SendGrid No 

Pricing Details

$0
Free Trial No 
Free Version Yes 

Pricing Details

€149/month
Free Trial Yes 
Free Version 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 

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 No 
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 No 
Live Training (Online) No 
In Person No 

Types of Training

Training Docs Yes 
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

Transendly

Founded

2026

Country

United States

Website

transendly.com

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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