Enhance SMTP tools

[butschster]

Buggregator currently has features for handling emails via SMTP, including rendering received emails and displaying key information. However, to make Buggregator even more powerful and user-friendly, we could incorporate several new functionalities.

These enhancements could include:

1. Broken Link Checker - This feature would automatically scan emails for broken links, helping ensure all sent links are valid and accessible.
2. Spam Report - With this feature, emails could be automatically checked against the Apache SpamAssassin score. This would help in identifying potential spam and ensuring important emails do not end up in the spam folder.
3. Forward Emails - This functionality would allow users to forward emails from Buggregator to teammates or clients for review. It can also be used to send emails to testing services to check their compatibility with various email clients.

These proposed features aim to make email management within Buggregator more robust, ensuring better communication and workflow for its users. Additionally, we are open to any further suggestions or ideas to make our tool even better.

[ALameLlama]

adding a HTML check would also be awesome,

https://mailpit.axllent.org/docs/usage/html-check/