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Average Ratings 0 Ratings

Total
ease
features
design
support

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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

Experience collaborative and scalable email production tailored for both brand and agency teams. Revolutionize the way your team designs marketing emails by developing a customizable, modular Email Design System with our intuitive yet robust syntax. Empower your copywriters and editors, who are most familiar with your content, to take charge of the email creation process. Our user-friendly drag-and-drop visual editor enables them to construct emails effortlessly without any prior knowledge of HTML. You have the option to download the HTML for integration into your platform, or seamlessly connect Taxi to your Email Service Provider (ESP). Allow your team members to excel by managing access and permissions effectively. By streamlining the email campaign creation process, you can respond more swiftly to market dynamics and competitive pressures. Enjoy the ability to send test emails in real-time while editing, and utilize integrations like Litmus to preview your designs across more than 90 email applications and devices. Set up intricate campaigns that support multiple languages and segmentation with just a few clicks, ensuring that you reach your audience effectively. Establishing an Email Design System not only defines your formatting and layouts but also guarantees that your campaigns remain consistently aligned with your brand identity. Ultimately, this approach not only enhances efficiency but also cultivates creativity within your marketing efforts.

API Access

Has API No 

API Access

Has API No 

Screenshots View All

No images available

Screenshots View All

Integrations

Amazon SES Yes 
Postmark Yes 
SendGrid Yes 
Apteco Orbit No 
Brevo No 
Fluence No 
GetResponse No 
Hive Data No 
IBM Watson No 
MailUp No 
Mailchimp Transactional Email (Mandrill) No 
Moosend No 
Optimove No 
Oracle Siebel CRM No 
Salesforce No 
Splio No 
Vero No 
Vertical ERP No 
Zeta Marketing Platform No 

Integrations

Amazon SES Yes 
Postmark Yes 
SendGrid Yes 
Apteco Orbit Yes 
Brevo Yes 
Fluence Yes 
GetResponse Yes 
Hive Data Yes 
IBM Watson Yes 
MailUp Yes 
Mailchimp Transactional Email (Mandrill) Yes 
Moosend Yes 
Optimove Yes 
Oracle Siebel CRM Yes 
Salesforce Yes 
Splio Yes 
Vero Yes 
Vertical ERP Yes 
Zeta Marketing Platform Yes 

Pricing Details

$0
Free Trial No 
Free Version Yes 

Pricing Details

No price information available.
Free Trial No 
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 Yes 
Live Rep (24/7) Yes 
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) Yes 
In Person Yes 

Vendor Details

Company Name

Optosoftware inc.

Founded

2025

Country

Canada

Website

coldletter.com

Vendor Details

Company Name

Taxi for Email

Founded

2012

Country

United Kingdom

Website

taxiforemail.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 

Product Features

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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