0
Hon-Tre_IFS created
[RemoteService(IsEnabled = false)] public abstract class SendGridEmailNotificationAppServiceBase : SiteHostAppService { protected IEmailSender _emailSender; private readonly ITemplateRenderer _templateRenderer; private readonly Microsoft.Extensions.Configuration.IConfiguration _configuration; private readonly ITenantRepository _tenantRepository; private readonly ICurrentTenant _currentTenant; private readonly IStringEncryptionService _stringEncryption;
public SendGridEmailNotificationAppServiceBase(IEmailSender emailSender, ITemplateRenderer templateRenderer,
Microsoft.Extensions.Configuration.IConfiguration configuration, ITenantRepository tenantRepository, ICurrentTenant currentTenant, IStringEncryptionService stringEncryption)
{
_emailSender = emailSender;
_templateRenderer = templateRenderer;
_configuration = configuration;
_tenantRepository = tenantRepository;
_currentTenant = currentTenant;
_stringEncryption = stringEncryption;
}
public virtual async Task EmailNotification(SendGridEmailNotificationDto input)
{
string emailBody = null!;
input.BaseSiteUrl = _configuration["App:SelfUrl"]?.Trim();
try
{
if (input.MailSubject.Equals("CHANGEPASSWORD", StringComparison.InvariantCultureIgnoreCase))
{
input.MailSubject = "Your Password Has Been Successfully Changed";
var model = new ChangePasswordModel
{
Name = input.Name,
Url = input.BaseSiteUrl + "/Account/login",
Type = input.Type,
TenantName = input.TenantName
};
model.setCurrentDateTime();
emailBody = await LoadTemplate("ChangePassword.tpl", model);
}
else if (input.MailSubject.Equals("NEWUSERCREATED", StringComparison.InvariantCultureIgnoreCase))
{
input.MailSubject = "Your IFS Account Details and Next Steps";
var angularUrl = _configuration["App:SelfUrl"]?.Trim()?.TrimEnd('/');
if (string.IsNullOrEmpty(angularUrl))
{
throw new InvalidOperationException("App:AngularUrl is not set in configuration.");
}
string tenantHostName = await GetTenantHostNameAsync();
string navigationUrl;
if (_currentTenant.Id.HasValue)
{
string encryptedtenantHostName = _stringEncryption.Encrypt(tenantHostName);
navigationUrl = $"{angularUrl}/Account/Login?tenantName={Uri.EscapeDataString(encryptedtenantHostName)}";
}
else
{
navigationUrl = $"{angularUrl}/Account/Login";
}
var model = new UserCreationModel
{
Email = input.MailTo,
Username = input.Username,
Name = input.Name,
TenantId = input.TenantId,
UserId = input.Id,
Password = input.Password,
Url = navigationUrl
};
emailBody = await LoadTemplate("UserCreation.tpl", model);
}
else
{
throw new UserFriendlyException("Unsupported email subject type.");
}
await _emailSender.SendAsync(
to: input.MailTo,
subject: input.MailSubject,
body: emailBody,
isBodyHtml: input.IsBodyHtml
);
}
catch (Exception ex)
{
Logger.LogError(ex, "An error occurred while sending the email notification.");
throw new UserFriendlyException($"Failed to send the email. Reason: {ex.Message}. Please try again later.");
}
}
private async Task<string> LoadTemplate(string templateName, object model)
{
string renderedContent = null!;
try
{
if (string.IsNullOrWhiteSpace(templateName))
{
throw new UserFriendlyException("Template name is invalid.");
}
string templateDirectory;
var isDevEnv = Convert.ToBoolean(_configuration["IsDevEnv"] ?? "false");
templateDirectory = isDevEnv
? Path.Combine(Directory.GetCurrentDirectory(), "Emailing", "Templates")
: Path.Combine(AppContext.BaseDirectory, "Emailing", "Templates");
string templatePath = Path.Combine(templateDirectory, templateName);
if (!File.Exists(templatePath))
{
throw new FileNotFoundException($"Email template not found at path: {templatePath}");
}
var templateContent = await File.ReadAllTextAsync(templatePath);
// Apply replacements based on template name
if (templateName.Equals("UserCreation.tpl", StringComparison.OrdinalIgnoreCase) && model is UserCreationModel userModel)
{
renderedContent = templateContent
.Replace("{{model.Name}}", userModel.Name)
.Replace("{{model.Email}}", userModel.Email)
.Replace("{{model.Username}}", userModel.Username)
.Replace("{{model.Password}}", userModel.Password)
.Replace("{{model.Url}}", userModel.Url);
}
else if (templateName.Equals("ChangePassword.tpl", StringComparison.OrdinalIgnoreCase) && model is ChangePasswordModel passwordModel)
{
renderedContent = templateContent
.Replace("{{model.Name}}", passwordModel.Name)
.Replace("{{model.Date}}", passwordModel.Date.ToString("MMMM d, yyyy 'at' h:mm tt"))
.Replace("{{model.TenantName}}",passwordModel.TenantName)
.Replace("{{model.Url}}", passwordModel.Url);
}
else
{
throw new UserFriendlyException($"Unsupported template or model type for: {templateName}");
}
return renderedContent;
}
catch (Exception ex)
{
Logger.LogInformation(renderedContent);
Logger.LogError(ex, $"Failed to load or process email template: {templateName}");
throw new UserFriendlyException($"An error occurred while preparing the email content. --> {ex.Message}");
}
}
private async Task<string> GetTenantHostNameAsync()
{
string tenantHostName = "default";
if (_currentTenant.Id.HasValue)
{
var tenant = await _tenantRepository.FindAsync(_currentTenant.Id.Value);
if (tenant?.ExtraProperties.TryGetValue("tenantHostName", out var hostNameObj) == true)
{
tenantHostName = hostNameObj?.ToString() ?? tenantHostName;
}
}
return tenantHostName;
}
" private async Task<string> RenderEmailBodyAsync(string templateName, object model) { string renderedBody = null!; try { // Render the email body using the template renderer renderedBody = await _templateRenderer.RenderAsync(templateName, model); return renderedBody; } catch (Exception ex) { // Log the error and rethrow a user-friendly exception //Logger.LogError(ex, $"Failed to render email template: {templateName}"); throw new UserFriendlyException($"renderedBody string = {renderedBody} --> {ex.ToString()} for template {templateName} An error occurred while preparing the email content."); }" }
}
5 Answer(s)
-
0
- Solution Based on your code and the fact that it works locally but fails after deployment when using text templates, the root causes are typically:
- Email sender not configured for production (ABP uses NullEmailSender in Debug).
- Templates are being read from the physical file system, which doesn’t exist in the deployed environment (container/IIS/bin path differences).
- Using ITemplateRenderer without registering/embedding templates in the ABP Virtual File System (VFS).
Fix it with the following steps:
A) Ensure email sending is enabled in Production
- Remove/disable NullEmailSender replacement in production builds. In your host module, only replace IEmailSender with NullEmailSender in DEBUG:
public override void ConfigureServices(ServiceConfigurationContext context) { #if DEBUG context.Services.Replace(ServiceDescriptor.Singleton<IEmailSender, NullEmailSender>()); #endif }- Provide SMTP/MailKit settings in production (e.g., appsettings.Production.json, environment variables, or ABP Setting Management DB). Minimum settings:
"Settings": { "Abp.Mailing.Smtp.Host": "smtp.yourprovider.com", "Abp.Mailing.Smtp.Port": "587", "Abp.Mailing.Smtp.UserName": "user", "Abp.Mailing.Smtp.Password": "<ENCRYPTED_PASSWORD>", "Abp.Mailing.Smtp.EnableSsl": "true", "Abp.Mailing.Smtp.UseDefaultCredentials": "false", "Abp.Mailing.DefaultFromAddress": "no-reply@yourdomain.com", "Abp.Mailing.DefaultFromDisplayName": "Your App" }Note: The SMTP password must be stored encrypted if you put it in settings. Use IStringEncryptionService to encrypt before saving to the DB or write a small snippet at startup to call SettingManager.SetGlobalAsync for the password (ABP encrypts on set, decrypts on get).
B) Stop loading templates from the physical file system; embed and use ABP VFS + ITemplateRenderer Right now, LoadTemplate reads files via File.ReadAllTextAsync from AppContext.BaseDirectory/Emailing/Templates. This commonly breaks in containers, single-file publish, or when paths differ.
Use ABP’s text templating + virtual file system:
- Add your template files to the Domain (or another project) and mark them as Embedded Resource, e.g.:
- Emailing/Templates/UserCreation.tpl
- Emailing/Templates/ChangePassword.tpl
- Register the embedded files in the module:
[DependsOn(typeof(AbpEmailingModule))] public class YourProjectDomainModule : AbpModule { public override void ConfigureServices(ServiceConfigurationContext context) { Configure<AbpVirtualFileSystemOptions>(options => { options.FileSets.AddEmbedded<YourProjectDomainModule>(); }); } }- Define template keys and bind them to the embedded paths:
public static class MyEmailTemplates { public const string UserCreation = "MyEmailTemplates.UserCreation"; public const string ChangePassword = "MyEmailTemplates.ChangePassword"; } public class EmailTemplateDefinitionProvider : TemplateDefinitionProvider { public override void Define(ITemplateDefinitionContext context) { context.Add( new TemplateDefinition(MyEmailTemplates.UserCreation) .WithVirtualFilePath("/Emailing/Templates/UserCreation.tpl", isInlineLocalized: true) ); context.Add( new TemplateDefinition(MyEmailTemplates.ChangePassword) .WithVirtualFilePath("/Emailing/Templates/ChangePassword.tpl", isInlineLocalized: true) ); } }- Render with ITemplateRenderer using the keys (no manual file IO):
private async Task<string> RenderEmailBodyAsync(string templateName, object model) { // Map friendly names to your template keys var templateKey = templateName.Equals("UserCreation.tpl", StringComparison.OrdinalIgnoreCase) ? MyEmailTemplates.UserCreation : MyEmailTemplates.ChangePassword; return await _templateRenderer.RenderAsync(templateKey, model); }- Update your EmailNotification method to call RenderEmailBodyAsync instead of LoadTemplate (and remove all file system logic). Your current per-template Replace code is not needed; ITemplateRenderer will inject the model values if your tpl uses ABP’s Scriban syntax, e.g.:
- In tpl: Hello {{ model.Name }}!
- In code: new { Name = input.Name, Url = "...", ... }
C) If you want to keep raw HTML templates and simple Replace (without Scriban)
- Still embed the files and load via VFS provider:
private readonly IFileProvider _fileProvider; public SendGridEmailNotificationAppServiceBase(..., IVirtualFileProvider vfs, ...) { _fileProvider = vfs; } private async Task<string> LoadTemplateFromVfsAsync(string virtualPath) { var file = _fileProvider.GetFileInfo(virtualPath); // e.g. "/Emailing/Templates/UserCreation.tpl" if (!file.Exists) throw new FileNotFoundException($"Template not found: {virtualPath}"); using var stream = file.CreateReadStream(); using var reader = new StreamReader(stream); return await reader.ReadToEndAsync(); }- Then keep your Replace code but call LoadTemplateFromVfsAsync("/Emailing/Templates/UserCreation.tpl"). This avoids AppContext.BaseDirectory issues in production.
D) Ensure environment-specific URLs are configured
- You use _configuration["App:SelfUrl"] for BaseSiteUrl and also refer to angular URL for navigation. Provide correct values in production appsettings (or environment variables) so links in emails are valid.
E) Validate multi-tenancy handling and encryption
- Your tenantName encryption is fine; just ensure you URL-encode the encrypted string (you already do with EscapeDataString). Confirm that decryption works on the login page.
F) Use MailKit in production (recommended) If you see warnings about SmtpClient, add AbpMailKit and configure MailKit sender:
- Add package Volo.Abp.MailKit and depend on AbpMailKitModule.
- Configure settings the same way; ABP routes to MailKit automatically when module is present.
G) Quick checklist for deployed environment
- SMTP/MailKit settings are present and correct (host/port/SSL/username/password).
- Password stored encrypted or set via SettingManager on startup.
- Remove debug-only NullEmailSender in production.
- Email templates are embedded and accessed via ABP VFS or via ITemplateRenderer with template definitions.
- No direct File.ReadAllTextAsync to content paths.
- App:SelfUrl/AngularUrl configured for production.
Code summary (minimal changes to your class):
- Replace your LoadTemplate method with ITemplateRenderer calls as shown in B.4.
- Register VFS + TemplateDefinitionProvider in your module.
- Keep IEmailSender usage as-is.
- Sources
- https://abp.io/docs/latest/deployment/configuring-production
- https://abp.io/community/articles/jkeb8zzh
- https://abp.io/support/questions/226
This response was generated by AI. If it didn’t solve your problem, feel free to post a new answer — our support team will jump in to help you soon.
-
0
hi
Do you get any exceptions/errors?
Thanks.
-
0
I don't have any exception if you want I will share the logs
-
0
- Solution Thanks. If there are no exceptions, this usually means:
- The app is using NullEmailSender (so emails are “sent” to logs, not to SMTP).
- Templates are not found in the deployed environment because they are read from the physical filesystem instead of ABP’s Virtual File System (VFS).
- SMTP settings are missing/incorrect in production.
Please try these definitive checks/fixes:
A) Ensure real email sender is used in production
- In your module, keep NullEmailSender only for DEBUG:
public override void ConfigureServices(ServiceConfigurationContext context) { #if DEBUG context.Services.Replace(ServiceDescriptor.Singleton<IEmailSender, NullEmailSender>()); #endif }- On the server, verify SMTP settings exist (DB Settings or appsettings): Settings required:
- Abp.Mailing.Smtp.Host
- Abp.Mailing.Smtp.Port
- Abp.Mailing.Smtp.UserName
- Abp.Mailing.Smtp.Password
- Abp.Mailing.Smtp.EnableSsl
- Abp.Mailing.Smtp.UseDefaultCredentials
- Abp.Mailing.DefaultFromAddress
- Abp.Mailing.DefaultFromDisplayName
B) Prefer MailKit in production
- Add Volo.Abp.MailKit and depend on AbpMailKitModule for a modern SMTP client.
C) Stop using File.ReadAllTextAsync for templates in production
- Embed your .tpl files and use ABP text templating + VFS, so they are accessible after publish:
- Mark your templates as Embedded Resource (e.g., Emailing/Templates/UserCreation.tpl).
- Register the embedded set:
Configure<AbpVirtualFileSystemOptions>(options => { options.FileSets.AddEmbedded<YourProjectDomainModule>(); });- Define templates:
public static class MyEmailTemplates { public const string UserCreation = "MyEmailTemplates.UserCreation"; public const string ChangePassword = "MyEmailTemplates.ChangePassword"; } public class EmailTemplateDefinitionProvider : TemplateDefinitionProvider { public override void Define(ITemplateDefinitionContext context) { context.Add(new TemplateDefinition(MyEmailTemplates.UserCreation) .WithVirtualFilePath("/Emailing/Templates/UserCreation.tpl", isInlineLocalized: true)); context.Add(new TemplateDefinition(MyEmailTemplates.ChangePassword) .WithVirtualFilePath("/Emailing/Templates/ChangePassword.tpl", isInlineLocalized: true)); } }- Render via ITemplateRenderer (Scriban):
private async Task<string> RenderEmailBodyAsync(string templateName, object model) { var key = templateName.Equals("UserCreation.tpl", StringComparison.OrdinalIgnoreCase) ? MyEmailTemplates.UserCreation : MyEmailTemplates.ChangePassword; return await _templateRenderer.RenderAsync(key, model); }- Replace your LoadTemplate usage with RenderEmailBodyAsync, and structure your .tpl with Scriban placeholders like {{ model.Name }}, {{ model.Url }}, etc.
D) If you want to keep manual replacements
- Still use VFS to read:
private readonly IVirtualFileProvider _vfs; public SendGridEmailNotificationAppServiceBase(..., IVirtualFileProvider vfs, ...) { _vfs = vfs; } private async Task<string> LoadTemplateFromVfsAsync(string virtualPath) { var fi = _vfs.GetFileInfo(virtualPath); if (!fi.Exists) throw new FileNotFoundException($"Template not found: {virtualPath}"); using var s = fi.CreateReadStream(); using var r = new StreamReader(s); return await r.ReadToEndAsync(); }- And call LoadTemplateFromVfsAsync("/Emailing/Templates/UserCreation.tpl").
E) Verify environment URLs
- Ensure App:SelfUrl (and any Angular/Client URL you use) is set correctly in production config; otherwise links in mails may be broken.
F) Quick diagnostic to confirm mail path
- Temporarily send a simple plain text email without templating:
await _emailSender.SendAsync("you@domain.com", "Test", "Hello", false);If this arrives, the SMTP configuration is correct and the problem is template loading; move to using VFS/ITemplateRenderer as above.
If you still want to share logs, please look specifically for:
- “NullEmailSender” messages (indicates debug sender is active).
- “Template not found” or path errors.
- Smtp/MailKit connection errors (host/port/ssl/creds).
- Sources
- https://abp.io/docs/latest/deployment/configuring-production
- https://abp.io/docs/latest/framework/infrastructure/virtual-file-system
- https://abp.io/community/articles/jkeb8zzh
- https://abp.io/docs/latest/framework/infrastructure/emailing
This response was generated by AI. If it didn’t solve your problem, feel free to post a new answer — our support team will jump in to help you soon.
-
0
hi
I don't have any exception if you want I will share the logs
Sure. liming.ma@volosoft.com
Additionally, what do you mean by not sending emails?
Has
emailSender.SendAsyncbeen called?await _emailSender.SendAsync( to: input.MailTo, subject: input.MailSubject, body: emailBody, isBodyHtml: input.IsBodyHtml );Thanks.
