File Format APIs for Go
Open Source GO APIs for Email Files
Read, Write & Extract Attachments from MSG & EML files via GO.
Email File Format APIs for GO Include
Free GO .NET Library for Generating Email Message with Attachments.
Free Email Testing Tool for developer, developed in GO.
Free Go API to send responsive HTML email messages.
Free GO API, to send emails using SMTP Server.
A Fast and Free Email Verification API written in Go.
It has included support for polling as well as email templates and enables programmers to create and send emails using SMTP Server.