Freedom251 › AI Newsletter Generators
Letter
What Letter is
Letter is a web-based, AI-assisted newsletter builder for creators, designers, and developers. It can import an article’s title, description, and images from a link, then provides more than 50 drag-and-drop components for newsletter design. The visual editor supports editing email component code, and its AI assistant can draft introductions or rewrite article blurbs. A template library and tools let users create publications, hosted pages, creator profiles, image libraries, and template marketplace entries. Listed plugins and integrations include CodePen, Adobe Express, SendGrid, and HubSpot. The Adobe Express integration provides access to templates, background removal, image editing, branded assets, and Creative Cloud Libraries within Letter. Letter also offers API keys for transactional templates, personalized emails, dynamic variables, and real-time template rendering. Its Free plan costs nothing and includes one letter, content import, test sending, and code export. Pro is $20 a month and includes unlimited letters, premium components, HubSpot and SendGrid export, and premium support. Publishing automation is manual.
Who it suits
Letter suits creators, designers, developers, startups, solo entrepreneurs, and makers who build newsletters. It may also suit developers who want to edit email components as code or use the API for personalized email templates.
What it does well
- Imports article details and images from a link.
- More than 50 drag-and-drop design components.
- AI assistant drafts introductions and rewrites blurbs.
- Free plan includes one letter and code export.
- Pro includes premium support and a 30-day money-back guarantee.
What to know first
- Free plan is limited to one letter.
- Publishing automation is manual.
- Premium support is not included in the Free plan.
- Privacy policy says absolute security cannot be guaranteed.
Limits
The Free plan includes one letter, content import, test sending and code export, with no premium support. Pro costs $20 per month and includes unlimited letters, 50+ premium components, HubSpot and SendGrid export, and premium support.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | $0/month or $0/year · 1 letter · Content import · Send test · Code export · no premium support | Free |
| Pro | $180/year · Unlimited letters · Content import · Send test · Code export · 50+ premium components · HubSpot and SendGrid export · Premium support | $180 a year |
| Pro | $20/month · Unlimited letters · Content import · Send test · Code export · 50+ premium components · HubSpot and SendGrid export · Premium support | $20 a month |
As letter.so lists them, read 30 Sept 2026. The maker's own page has the final word.
Getting started
- Open the Letter website.
- Choose the Free plan or Pro plan.
- Import an article by link or start from the template library.
- Build the newsletter with drag-and-drop components and use the AI assistant for introductions or blurbs.
- Send a test or export code; Pro also includes HubSpot and SendGrid export.
Verdict
Letter combines a visual newsletter editor, AI writing assistance, and code editing, with a free tier for one letter. Pro adds unlimited letters and premium components for $20 a month.
Questions
Is Letter free?
Yes. The Free plan costs $0 per month or year and includes one letter.
How much does Pro cost?
Pro costs $20 per month and includes unlimited letters, premium components, HubSpot and SendGrid export, and premium support.
Which platforms does Letter support?
Letter is available on the web.
What integrations does Letter list?
The homepage lists CodePen, Adobe Express, SendGrid and HubSpot. Pro includes HubSpot and SendGrid export.
Does Letter have an API?
Yes. API keys authenticate requests for transactional templates, personalized emails, dynamic variables and real-time template rendering.
What does Letter say about personal data security?
Its privacy policy says it uses commercially acceptable means to protect personal data, but cannot guarantee absolute security.
Facts from Letter's own pages
- Adobe Express
- The Adobe Express integration provides template access, background removal, image editing, branded assets, and Creative Cloud Libraries inside Letter. · letter.so, 30 Sept 2026
- AI tools
- Letter's AI assistant generates newsletter introductions and rewrites article blurbs. · letter.so, 30 Sept 2026
- API
- Letter API keys authenticate requests for transactional templates, personalized emails, dynamic variables, and real-time template rendering. · app.letter.so, 30 Sept 2026
- Audience
- Letter describes itself as a newsletter tool for creators, designers, developers, startups, solo entrepreneurs, and makers. · letter.so, 30 Sept 2026
- Components
- Letter provides more than 50 prebuilt drag-and-drop design components. · letter.so, 30 Sept 2026
- Content import
- Letter imports titles, descriptions, and images from an article link in one click. · letter.so, 30 Sept 2026
- Data protection
- The privacy policy says Letter uses commercially acceptable means to protect personal data but cannot guarantee absolute security. · letter.so, 30 Sept 2026
- Editor
- Letter includes a clean what-you-see-is-what-you-get editor and lets developers view and edit email component code. · letter.so, 30 Sept 2026
- Guarantee
- The Pro plan includes a 30-day money-back guarantee. · letter.so, 30 Sept 2026
- Headquarters
- Thornton Cleveleys, Lancashire, United Kingdom · letter.so, 28 Sept 2026
- Integrations
- The homepage lists CodePen, Adobe Express, SendGrid, and HubSpot as plugins or integrations. · letter.so, 30 Sept 2026
- Product
- Letter is an AI-assisted newsletter builder for content creators, designers, and developers. · letter.so, 30 Sept 2026
- Security and privacy
- Letter's privacy policy says it collects email, name, usage data, device data, and uses session and persistent cookies for authentication and service operation. · letter.so, 30 Sept 2026
- Support
- Premium support is included in the Pro plan, while the site provides a technical-support contact link. · letter.so, 30 Sept 2026
- Templates
- Letter offers a template library and lets users create publications, hosted pages, creator profiles, image libraries, and template marketplace entries. · letter.so, 30 Sept 2026
Where Letter stands on Freedom251
- AI Newsletter Generators#11 of 28