Average Ratings 0 Ratings
Average Ratings 0 Ratings
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
Mailrith is an email marketing and automation platform built for startups, creators, newsletter operators, small businesses, agencies, and growing teams.
Users can collect Subscribers through hosted forms, embedded forms, and landing pages, then organize them using tags, custom fields, and dynamic segments. They can send one-time Broadcasts, create automated Sequences, build visual Automations, manage reusable email templates, and use Magic Links to trigger actions when Subscribers click links.
Mailrith also supports bring-your-own SMTP through Amazon SES, Postmark, SendGrid, Mailgun, Resend, Brevo, or a custom SMTP server. This gives users greater control over their email infrastructure and sending costs.
For teams and developers, Mailrith includes shared workspaces, user permissions, API access, webhooks, OAuth support, and TypeScript and Python SDKs. This makes it suitable for both everyday email marketing and more advanced, connected business workflows.
API Access
Has API
No
API Access
Has API
Yes
Screenshots View All
No images available
Integrations
Amazon SES
Yes
Postmark
Yes
SendGrid
Yes
Brevo
No
ChatGPT
No
Claude
No
Mailgun
No
Resend
No
Zapier
No
Integrations
Amazon SES
Yes
Postmark
Yes
SendGrid
Yes
Brevo
Yes
ChatGPT
Yes
Claude
Yes
Mailgun
Yes
Resend
Yes
Zapier
Yes
Pricing Details
$0
Free Trial
No
Free Version
Yes
Pricing Details
$29/month
Fixed Pricing (Pricing doesn't increase with number of subscribers or emails sent)
Available Plans:
1. Solo Plan - $29/month or $290/year
2. Pro Plan - $49/month or $490/year
3. Agency Plan - $149/month or $1490/year (Additional Workspaces available at $12/month/workspace)
Available Plans:
1. Solo Plan - $29/month or $290/year
2. Pro Plan - $49/month or $490/year
3. Agency Plan - $149/month or $1490/year (Additional Workspaces available at $12/month/workspace)
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
Yes
Vendor Details
Company Name
Optosoftware inc.
Founded
2025
Country
Canada
Website
coldletter.com
Vendor Details
Company Name
Mailrith
Founded
2026
Country
India
Website
mailrith.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
No
Artificial Intelligence
Yes
Auto-Responders
Yes
CAN SPAM Compliance
Yes
Customer Surveys
No
Drip Campaigns
Yes
Dynamic Content
No
Event Triggered Email
Yes
Image Library
Yes
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
No