Top 20 NuGet email Packages

Support send email and attach file using Mailkit lib
Send emails with FluentEmail via Postmark.
Use Razor to build your templates from strings / files / EmbeddedResources outside of ASP.NET MVC for .NET Core
Provides the easiest way to send emails using smtp.
Provides functionality to easily commmunicate with google APIs.
EWS
Validate email for common typos and one-time email providers
Package Description
Network classes and extension methods, almost all static.
This package is intended to use for internal purpose only. No documentation publicly available.
This library helps to construct email body from a html template and then sends the email.
The SmtpLw (dedicated Locaweb SMTP) API client wrapper.
Validates the structure of email addresses, Social Security Numbers, and U.S. phone numbers.
Send HTML email by reading and formating content from the file or from string.
Package Description
Package Description
Base classes for working with EMails
Mailgun EMail sender
SMTP EMail sender