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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

MagicBell is a notification Inbox for web, mobile, email and in-app. MagicBell notification inbox supports a wide range of integrations such as Slack, iOS, Android, Firebase, SendGrid, Mailgun, Postmark, Google Chrome, Safari, Firefox and more. MagicBell learns about your users’ preferences and protects them from unnecessary digital noise with smart notifications delivery, unlike other notification systems. You can be sure that every notification landing into your users’ inbox is contextually relevant, making the experience of using your product even more delightful. MagicBell notification inbox offers straightforward documentation, extensible, feature-rich API and playground for visual testing. The product is entirely FREE for up to 100 active users.

API Access

Has API No 

API Access

Has API Yes 

Screenshots View All

No images available

Screenshots View All

Integrations

Postmark Yes 
SendGrid Yes 
AccessOwl No 
Amazon SES Yes 
Android No 
Apple iOS No 
Chrome OS No 
Firebase No 
Mailgun No 
Mozilla Firefox No 
Quickwork No 
Safari No 
Slack No 

Integrations

Postmark Yes 
SendGrid Yes 
AccessOwl Yes 
Amazon SES No 
Android Yes 
Apple iOS Yes 
Chrome OS Yes 
Firebase Yes 
Mailgun Yes 
Mozilla Firefox Yes 
Quickwork Yes 
Safari Yes 
Slack Yes 

Pricing Details

$0
Free Trial No 
Free Version Yes 

Pricing Details

Free
Free Trial Yes 
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 Yes 
iPad App Yes 
Android App Yes 
Windows Yes 
Mac Yes 
Linux Yes 
Chromebook Yes 

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

MagicBell

Founded

2021

Country

United States

Website

www.magicbell.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

Push Notifications

A/B Testing No 
Analytics Yes 
Campaign Segmentation No 
Contextual Targeting Yes 
Device Targeting Yes 
Expiry Notifications Yes 
Geo Targeting No 
Mobile Notifications Yes 
Notification Scheduling Yes 
Visual Notifications Yes 
Web Notifications Yes 

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