A ready email in 15 minutes
Letteros is a platform for creating and sending email campaigns. Pick a template, fill it with content, test it, and send.
What tasks it solves
Faster campaign production
We build a template that matches your brand style. From there, your team assembles promos, roundups, and email sequences on their own — cutting campaign prep time by up to 70%.
Quality and testing
Before sending, check how the email looks in real email clients. Link checks, responsiveness, and dark-mode testing right inside the editor. Heavy images and code are flagged so the email doesn't get clipped in Gmail.
Export and sending
The finished email exports to your mailing platform or sends directly from Letteros via the built-in Sender. Click maps and device stats are available right inside the platform.
How Letteros works
Everything for email production — already inside
AI email audit
The email is checked against a 100-point checklist covering readability, creative, design principles, and technical criteria. You get concrete recommendations before sending.
Analytics
Track opens, clicks, and engagement right inside the platform. A click map shows which elements of the email perform best.
Image editor and GIF generator
Edit images right in the editor — remove the background, crop, adjust tone. Generate images with AI or build frame-by-frame GIF animations.
Code editor
Edit a module's code right in the editor or import ready-made markup. Check the code with renders and microservices without leaving the platform.
AI content generation
Subject line, preheader, and automatic alt-text generation. Email images can also be generated right in the editor.
Content parsing
Content for product cards, news, and blog articles loads automatically from a website link or a Google Sheet.
Start with a ready-made template for your brand
A master template is a design system for email. A library of blocks tailored to your brand's needs: banners, product cards, content blocks, and more. Any campaign for any type of communication is assembled from them.
One tool for all your brand's communications
Letteros is evolving. We're building an ecosystem for all your brand's communications — presentation, banner, form, and article editors are already in development. Every format in one place, with no switching between tools.
Presentation editor
An editor with a familiar interface for building presentations in your brand’s consistent style. Pick a template for the scenario you need — a report, a proposal, or training materials — and fill it with content. Structure and design can be generated from a prompt.
Banner editor
An editor for creating banners and posts for every current format — social media, marketplaces, and ad platforms. Build a banner from scratch or speed things up with AI, which generates copy, images, and design variants.
Form editor
An editor for building questionnaires, surveys, and event registration forms in your brand’s consistent style. Embed the finished form on your site or send it directly. All forms are created and stored inside the platform.
Articles and documents editor
An editor for creating articles, corporate documents, and instructions in your brand’s consistent style. Publish an article as a web page or send it to subscribers by email. Documents, policies, and instructions are created and stored inside the platform.
FAQ
Getting started
No. The editor works like an ordinary text editor — you change text, images, and links without any technical knowledge. If you need to edit a module’s code or import ready-made markup, that option is available too.
Features
Sending and integrations
