ColdletterOptosoftware inc.
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Related Products
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About
Coldletter is an email templating and automation platform built for product and engineering teams that need better control over the emails their applications send. The platform works on top of providers such as SendGrid, Postmark, Amazon SES, Mailgun, Resend, and SparkPost, allowing teams to keep their existing delivery stack. Users can design responsive, accessible, and dark-mode-safe email templates with a visual editor instead of hand-coding complex HTML or MJML. Coldletter also supports reusable blocks, typed variables, live previews, test sends, localization, version control, and approval workflows. Its automation tools let teams build email journeys with triggers, waits, branches, A/B testing, and delivery analytics. Coldletter helps teams design, automate, manage, and deliver product emails more reliably from one centralized workspace.
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About
Email Creation Platform. Dramatically reduce email creation time without adding staff or sacrificing quality. Stensul integrates with leading automation platforms. Optimize team resources without adding staff or sacrificing quality. Guardrails empower marketers to build emails in minutes. Streamline the collaboration process so teams can build high-performing emails that drive results. An end-to-end platform brings all team members in the process together, instead of communicating in disconnected messaging tools.
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Audience
Coldletter is designed for product teams, engineering teams, lifecycle marketers, SaaS companies, and developers that need a centralized platform for designing, automating, versioning, and sending product emails through existing providers
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Audience
Digital and Marketing teams
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Support
Phone Support
24/7 Live Support
Online
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Support
Phone Support
24/7 Live Support
Online
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API
Offers API
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API
Offers API
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Screenshots and VideosNo images available
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Screenshots and Videos |
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Pricing
$0
Free Version
Free Trial
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Pricing
No information available.
Free Version
Free Trial
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Reviews/
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Reviews/
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Training
Documentation
Webinars
Live Online
In Person
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Training
Documentation
Webinars
Live Online
In Person
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Company InformationOptosoftware inc.
Founded: 2025
Canada
coldletter.com
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Company Informationstensul
United States
stensul.com
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Categories |
Categories |
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Email Marketing Features
A/B Testing
Artificial Intelligence
Auto-Responders
CAN SPAM Compliance
Customer Surveys
Drip Campaigns
Dynamic Content
Event Triggered Email
Image Library
Landing Pages/Web Forms
Mailing List Management
Mobile Optimized Emails
Reporting/Analytics
Subscriber Management
Template Management
WYSIWYG Email Editor
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Integrations
Adobe Campaign
Adobe Marketo Engage
Adobe Workfront
Amazon SES
Brandfolder
Braze
Eloqua
HubSpot CRM
HubSpot Customer Platform
HubSpot Marketing Hub
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Integrations
Adobe Campaign
Adobe Marketo Engage
Adobe Workfront
Amazon SES
Brandfolder
Braze
Eloqua
HubSpot CRM
HubSpot Customer Platform
HubSpot Marketing Hub
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