Yes, both Writemail and Mailr offer a Free Trial.
Pricing for Writemail Starts at $12/month whereas for Mailr Starts at $4.99/month.
Writemail offers several advantages, including Increases email productivity, Personalization options, Stores user preferences locally, Privacy conscious, Polite and many more functionalities.
The cons of Writemail may include a Stores options in cookie, No database storage, Lacks offline capabilities, Limited personalization / customization. and No API for integration
Mailr offers several advantages, including Google Chrome extension, Writes & replies to emails, User-controlled email intention, 10+ custom tones selection, Individuals & businesses friendly and many more functionalities.
The cons of Mailr may include a Only for Google Chrome, Requires account authentication, Not multi-language, Platform specificity. and Doesn't support all email platforms