Robin
You might try Trojitá. You will need to manually install it.
https://trojita.flaska.net/download.html
KDE/trojita
I am thinking it would not be difficult to create a solution, but it would require long-term support.
To begin something like that, I need some questions answered to better define the scope.
User Goals and Use Cases
What are the primary use cases for email composition?
* Blog publishing?
* Personal correspondence?
* Substack-like publishing?
Is email always sent to a specific address (e.g., post@blog.com
) or to various recipients?
Should the app support email templates or reuse of drafts?
Markdown and Rich Text Preferences
Should the editor support WYSIWYG-style Markdown, or is split view (source + preview) acceptable?
Do you require:
* Tables?
* Task lists?
* Code blocks with syntax highlighting?
* Math rendering?
* Embedded YouTube/video links?
Image Handling
Do you want to embed images inline or link to externally hosted images?
Should the app:
* Upload images automatically (to Imgur or another service)?
* Allow drag-and-drop images?
* Reference local paths?
Email Sending Method
How do you plan to send emails?
* Use msmtp
?
* Pipe to sendmail
?
* Open in Claws Mail?
* Save .eml
file for review?
Should the app store SMTP credentials or always defer to a system mailer?
Will you use multiple sender profiles (From addresses)?
Privacy and Security Concerns
Do you require GPG/PGP signing or encryption?
Should the app be able to send via Tor or proxy?
Should remote resources (e.g., in preview pane) be sandboxed or blocked?