Structr.Email package is intended to help sending email notifications.
dotnet add package Structr.Email
Setup basic email service:
// Configure email address.
services.AddEmail("[email protected]")
/* Setup one of email clients here. */;
// Configure email address of a sender with name and email templates root directory path.
services.AddEmail(new EmailAddress("[email protected]", "Example"), options => {
options.TemplateRootPath = "C:\\Templates";
})
/* Setup one of email clients here. */;
AddEmail() extension method performs registration email service IEmailSender. Additionally configure IEmailSender service used EmailOptions class. EmailOptions properties:Property name | Property type | Description |
|---|---|---|
From | EmailAddress | Email address of a sender. Required option, which configuring with AddEmail() method. |
TemplateRootPath | string? | Root directory path with email templates (needed if using email templates), default value is null. |
Email service uses different email clients. For example: File-client, SMTP-client, clients for cloud-based email delivery platform (like SendGrid, MailChimp etc.) or something else. You can use one of default implemented email client from list:
An SMTP-client allows sending of email notifications using a SMTP server. Setup email service with SMTP-client:
services.AddEmail("[email protected]")
.AddSmtpClient(host: "127.0.0.1", port: 25, options => {
options.User = "user";
options.Password = "password";
options.IsSslEnabled = true;
});
Additionally configure SMTP-client used
SmtpOptions class. SmtpOptions properties:Property name | Property type | Description |
|---|---|---|
Host | string | Domain name or IP address (IPv4) of the host used for SMTP transactions. Required option, which configuring with AddSmtpClient() method. |
Port | int | Port used for SMTP transactions. Required option, which configuring with AddSmtpClient() method, default value is 25. |
User | string? | User name used to authenticate a sender, default value is null. |
Password | string? | User password used to authenticate a sender, default value is null. |
IsSslEnabled | bool | Specify whether the SMTP-client uses SSL to encrypt a connection, default value is false. |
An File-client allows preserving of email notifications to file system. This behavior can be useful in development environment for example. Setup email service with File-client:
services.AddEmail("[email protected]")
.AddFileClient("C:\\Emails"); // All sending emails preserves in "C:\\Emails" directory.
You also can use clients depending on the environment. For example you can use File-client for development environment and SMTP-client for production environment.
EmailServiceBuilder builder = services.AddEmail("[email protected]");
#if DEBUG
builder.AddFileClient("C:\\Emails");
#else
builder.AddSmtpClient(host: "127.0.0.1", port: 25);
#endif
After setup you can inject
IEmailSender service and use it for sending email notifications:public class ReportService : IReportService
{
private readonly IDbContext _dbContext;
private readonly IEmailSender _emailSender;
public ReportService(IDbContext dbContext, IEmailSender emailSender)
{
_dbContext = dbContext;
_emailSender = emailSender;
}
public async Task<bool> SendReportAsync(int userId, string subject, string message, string reportFilePath)
{
var to = await _dbContext.Users
.Where(x => x.Id == userId)
.Select(x => x.Email)
.SingleOrDefaultAsync();
var emailMessage = new EmailMessage(to, message)
{
Subject = subject,
Attachments = new[] {
new EmailAttachment(reportFilePath, "text/html")
}
};
return await _emailSender.SendEmailAsync(emailMessage);
}
}
You can use
EmailTemplateMessage, EmailTemplateFileMessage classes to sending email notifications generating via templates. By default templates constructing via "{{" and "}}", for example "{{UserName}}".Example of using dynamic template:
// Define Model class for template.
class Recipient
{
public string Name { get; set; }
}
// Create instance of Model class.
var model = new Recipient { Name = "Peter Parker" };
// Create message
var message = new EmailTemplateMessage("[email protected]", "Hello, {{Name}}!", model);
// Send email notification with text "Hello, Peter Parker!".
await _emailSender.SendEmailAsync(message);
Example of using static template:
// Define Model class for template.
class Recipient
{
public string Name { get; set; }
}
// Define static template
class RecipientEmailTemplateMessage : EmailTemplateMessage<Recipient>
{
public override string Template => "Hello, {{Name}}!";
public RecipientEmailTemplateMessage(string to, Recipient model)
: base(new EmailAddress(to), model)
{}
}
// Create instance of Model class.
var model = new Recipient { Name = "Peter Parker" };
// Create message
var message = new RecipientEmailTemplateMessage("[email protected]", model);
// Send email notification with text "Hello, Peter Parker!".
await _emailSender.SendEmailAsync(message);
Last modified 10mo ago