sendEmail VS mailsend-go

sendEmail is a lightweight, command line SMTP email client.

mailsend-go is a command line tool to send mail via SMTP protocol, written with golang.

Ease of Use
sendEmail is a simple, lightweight utility that can be easily used from the command line without requiring advanced technical skills.
Lightweight
The software has minimal dependencies and does not require a bulky installation, making it easy to deploy and use on various systems.
Cross-Platform Support
sendEmail is compatible with numerous operating systems, including Windows, Linux, and macOS, providing flexibility for different environments.
Support for Multiple Protocols
It supports various protocols such as TLS and SSL, allowing secure email transmission.
Open Source
Being open-source software, users can freely inspect, modify, or extend the code to suit their requirements.

Limited Features
sendEmail lacks advanced features available in more comprehensive email sending solutions, such as email tracking, analytics, or rich formatting.
Minimal Documentation
The software documentation is not as extensive as other tools, which might make troubleshooting or advanced use cases more challenging.
No GUI
sendEmail operates entirely via the command line, which can be less user-friendly for those who prefer or require graphical interfaces.
Maintenance and Updates
As an open-source project, it may not receive regular updates or have active development, potentially limiting its long-term viability for some users.
Security Concerns
While it supports secure protocols, the solution may not meet all enterprise-level security requirements or provide advanced security features out-of-the-box.

Cross-Platform Support
mailsend-go is developed in Go, which allows it to run on various operating systems like Windows, macOS, and Linux without needing platform-specific modifications.
Simple Command-Line Interface
The tool provides a straightforward command-line interface, making it easy to send emails directly from the terminal without needing to open an email client.
Support for Multiple Protocols
mailsend-go supports both SMTP and SMTPS protocols, allowing users to send emails securely over encrypted connections.
Attachment Support
Users can easily send emails with attachments, enabling more versatile email sending capabilities, such as sharing files and documents.
Open Source and Free
Being an open-source project, mailsend-go is free to use, modify, and distribute, encouraging user contributions and community support.

Limited Features
Compared to fully-featured email clients or more comprehensive email libraries, mailsend-go offers a limited set of features focused solely on email sending.
Requires Command-Line Knowledge
Users need to be familiar with command-line operations to effectively use mailsend-go, which might be challenging for non-technical users.
Lack of a GUI
The absence of a graphical user interface makes the tool less accessible for users who prefer interacting with software through a visual interface.
Dependency on an SMTP Server
Users must have access to a working SMTP server to send emails, which may require additional configuration and knowledge of SMTP settings.