Average Ratings 0 Ratings

Total
ease
features
design
support

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

Write a Review

Average Ratings 5 Ratings

Total
ease
features
design
support

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

Personalized email marketing can increase sales. SmartrMail offers all the tools you need to increase sales via email marketing. Simple automation, beautiful newsletters, and advanced segmentation. SmartrMail analyzes your customers' browsing habits and purchase history to send personalized, automated emails. We send your customers the products that they like, at the right moment.

API Access

Has API No 

API Access

Has API No 

Screenshots View All

No images available

Screenshots View All

Integrations

Amazon SES Yes 
Axis LMS No 
Causal No 
Kixie PowerCall & SMS No 
Pandium No 
Personizely No 
Playable No 
Postmark Yes 
Radiance Labs No 
Retention.com No 
SendGrid Yes 
Shopify No 

Integrations

Amazon SES No 
Axis LMS Yes 
Causal Yes 
Kixie PowerCall & SMS Yes 
Pandium Yes 
Personizely Yes 
Playable Yes 
Postmark No 
Radiance Labs Yes 
Retention.com Yes 
SendGrid No 
Shopify Yes 

Pricing Details

$0
Free Trial No 
Free Version Yes 

Pricing Details

$29/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) 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 Yes 
Live Training (Online) Yes 
In Person No 

Vendor Details

Company Name

Optosoftware inc.

Founded

2025

Country

Canada

Website

coldletter.com

Vendor Details

Company Name

SmartrMail

Founded

2016

Website

www.smartrmail.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 Marketing

A/B Testing Yes 
Artificial Intelligence No 
Auto-Responders Yes 
CAN SPAM Compliance Yes 
Customer Surveys Yes 
Drip Campaigns Yes 
Dynamic Content Yes 
Event Triggered Email Yes 
Image Library No 
Landing Pages/Web Forms Yes 
Mailing List Management Yes 
Mobile Optimized Emails Yes 
Reporting/Analytics Yes 
Subscriber Management Yes 
Template Management Yes 
WYSIWYG Email Editor Yes 

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 

Alternatives

AledaMail Reviews

AledaMail

Senders

Alternatives

Mailpro Reviews

Mailpro

Maxony
Campaigner Reviews

Campaigner

j2 Global
SendGrid Reviews

SendGrid

Twilio SendGrid