AI assistant that automates routine work across email, calendar, Slack, files and other tools with human oversight.
Letro
$15Starting price
0Popularity
About Letro
Letro is an AI-powered email designer that converts plain-English prompts or uploaded screenshots into ready-to-use MJML/HTML templates in seconds. The tool automatically extracts and applies brand colors, fonts, logos, and tone of voice, ensuring consistency across all email designs. It leverages a RAG-powered knowledge base of brand documents to maintain accurate copy and content. Users can visually edit templates or scope AI edits to specific blocks, drag-and-drop components, and store assets in a media library. The platform supports exporting ESP-ready HTML/MJML files compatible with services like Mailchimp, Klaviyo, and SendGrid. This makes it particularly useful for marketers and developers seeking fast, code-free email template creation with AI-driven brand alignment and screenshot-to-email reconstruction capabilities.
Key features
- Converts prompts or screenshots into MJML/HTML email templates
- Automatically applies brand colors, fonts, logo, and tone of voice
- Uses RAG-powered knowledge base for accurate copy and content
- Visual editing and scoped AI edits for individual blocks
- Drag-and-drop component library
- Media library for storing assets
- ESP-ready export for Mailchimp, Klaviyo, SendGrid, and others
- Code-free template creation
Use cases
- Creating email templates from plain-English prompts
- Reconstructing email designs from screenshots
- Maintaining brand consistency in email marketing campaigns
Pros
- Converts plain-English prompts or screenshots into production-ready MJML/HTML email templates in seconds
- Automatically extracts and applies brand colors, fonts, logos, and tone of voice for consistency
- Supports screenshot-to-email reconstruction with pixel-faithful layouts
- RAG-powered knowledge base ensures emails align with brand voice and guidelines
- Visual block editor allows code-free refinement of templates
Cons
- Requires credits for generation and refinements, which may limit frequent use on free plans
- Screenshot-to-email reconstruction may not perfectly replicate complex or highly customized designs
Frequently asked questions about Letro
What is MJML and why does Letro use it?
MJML is an open-source markup language that compiles to cross-client HTML email. Letro uses it because it produces reliable, inbox-tested HTML that renders correctly across email clients like Outlook, Gmail, and Apple Mail.
Do I need to know how to code to use Letro?
No. The AI generates the MJML for you, and the visual block editor lets you edit any element by clicking it. Developers can also access the raw MJML editor if needed.
What counts as 1 credit?
One credit equals one full email generation. Refining or editing an existing email costs 0.5 credits, and screenshot-to-email reconstruction uses 1 credit. Credits reset monthly on paid plans.
How does the brand intelligence feature work?
Paste a URL to automatically fetch your brand’s colors, fonts, logo, and tone of voice. Letro applies these elements to every email generated, ensuring brand consistency without manual setup.
Can I use Letro with any email service provider (ESP)?
Yes. Letro exports ESP-ready HTML/MJML files compatible with services like Mailchimp, Klaviyo, Brevo, SendGrid, and many others.
How do I get started with Letro?
Sign up for a free account to access basic features, then upgrade to a paid plan for additional credits and storage. Start by describing your email or uploading a screenshot to generate a template.
