--- title: Send Emails with FluentEmail in .NET | daily.dev description: A walkthrough of sending transactional emails in .NET using FluentEmail, a library offering a unified API across providers like SMTP, SendGrid, Mailgun, and... canonical: https://daily.dev/posts/send-emails-with-fluentemail-in-net-bv1iiir6k twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Send Emails with FluentEmail in .NET | daily.dev og:description: A walkthrough of sending transactional emails in .NET using FluentEmail, a library offering a unified API across providers like SMTP, SendGrid, Mailgun, and... og:url: https://daily.dev/posts/send-emails-with-fluentemail-in-net-bv1iiir6k og:image: https://api.daily.dev/og/posts/bV1iiIr6k.png og:image:alt: Send Emails with FluentEmail in .NET og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Send Emails with FluentEmail in .NET **[NikolaTech](https://daily.dev/sources/nikolatech)** · 4 min read · 0 upvotes · 0 comments ## Summary A walkthrough of sending transactional emails in .NET using FluentEmail, a library offering a unified API across providers like SMTP, SendGrid, Mailgun, and MailKit. Covers installing the NuGet package, setting up smtp4dev via Docker Compose for local testing, configuring FluentEmail through dependency injection, sending basic emails, and using Razor templates for dynamic email content. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How do I send emails in .NET using FluentEmail with an SMTP provider? Install the FluentEmail.Smtp NuGet package, then configure it via dependency injection using AddFluentEmail with sender email and name, chained with AddSmtpSender passing a SmtpClient configured with host, port, and EnableSsl. Inject IFluentEmail into an endpoint and call Subject, Body, and Send to dispatch the message, with no code changes needed if you switch providers later. _daily.dev surfaces practical .NET integration guides like this for developers wiring up email delivery._ ### How can I test outgoing emails locally in .NET without a real SMTP server? Use smtp4dev, a fake SMTP server built for local development that captures outgoing emails and exposes a web UI to inspect them. Add it as a service in Docker Compose using the rnwood/smtp4dev image, mapping port 3000 for the web UI and 2525 for SMTP, then point your app's SMTP host and port configuration at the container. _developers setting up local email testing workflows can find setups like this via daily.dev._ ### How do I send templated emails with Razor in FluentEmail for .NET? Chain AddRazorRenderer() onto the FluentEmail dependency injection setup alongside AddSmtpSender, then use UsingTemplateFromFile with a path to a .cshtml template and a model object instead of manually setting Body. FluentEmail also supports UsingTemplate and UsingTemplateFromEmbedded for other templating sources. _daily.dev helps developers tracking down templating patterns like Razor-based emails in .NET stay informed._ ## Similar posts on daily.dev - [How to send email with Cloudflare Email Service](https://daily.dev/posts/how-to-send-email-with-cloudflare-email-service-b58bo9wrj) · Flavio Copes · 1 upvotes · 0 comments - [Sending Emails Using Python – Real Python](https://daily.dev/posts/sending-emails-using-python-real-python-fq8gtuxjy) · Real Python · 0 upvotes · 0 comments - [How to Create Dynamic Emails in Go with React Email](https://daily.dev/posts/how-to-create-dynamic-emails-in-go-with-react-email-otshkbizc) · freeCodeCamp · 20 upvotes · 0 comments - [Stop wrestling with email templates. Use React Email](https://daily.dev/posts/stop-wrestling-with-email-templates-use-react-email-wnbbcodkm) · iO tech\_hub · 0 upvotes · 1 comments --- Tags: [#.net](https://daily.dev/tags/.net), [#docker-compose](https://daily.dev/tags/docker-compose) [View this post on daily.dev](https://daily.dev/posts/send-emails-with-fluentemail-in-net-bv1iiir6k) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Send Emails with FluentEmail in .NET","url":"https://daily.dev/posts/send-emails-with-fluentemail-in-net-bv1iiir6k","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/send-emails-with-fluentemail-in-net-bv1iiir6k"},"datePublished":"2026-10-04T13:07:41.274Z","dateModified":"2026-10-04T13:19:04.502Z","description":"A walkthrough of sending transactional emails in .NET using FluentEmail, a library offering a unified API across providers like SMTP, SendGrid, Mailgun, and...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/70934e66fd7acd0bfc2274997f1c96d0?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/70934e66fd7acd0bfc2274997f1c96d0?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"NikolaTech","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"NikolaTech","logo":"https://media.daily.dev/image/upload/s--1h2fO6FL--/f_auto,q_auto/v1791119050/logos/nikolatech?_a=BAMAMicg0","url":"https://daily.dev/sources/nikolatech"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/send-emails-with-fluentemail-in-net-bv1iiir6k","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":".net,docker-compose","timeRequired":"PT4M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"NikolaTech","item":"https://daily.dev/sources/nikolatech"},{"@type":"ListItem","position":3,"name":"Send Emails with FluentEmail in .NET"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/send-emails-with-fluentemail-in-net-bv1iiir6k#faq","mainEntity":[{"@type":"Question","name":"How do I send emails in .NET using FluentEmail with an SMTP provider?","acceptedAnswer":{"@type":"Answer","text":"Install the FluentEmail.Smtp NuGet package, then configure it via dependency injection using AddFluentEmail with sender email and name, chained with AddSmtpSender passing a SmtpClient configured with host, port, and EnableSsl. Inject IFluentEmail into an endpoint and call Subject, Body, and Send to dispatch the message, with no code changes needed if you switch providers later. daily.dev surfaces practical .NET integration guides like this for developers wiring up email delivery."}},{"@type":"Question","name":"How can I test outgoing emails locally in .NET without a real SMTP server?","acceptedAnswer":{"@type":"Answer","text":"Use smtp4dev, a fake SMTP server built for local development that captures outgoing emails and exposes a web UI to inspect them. Add it as a service in Docker Compose using the rnwood/smtp4dev image, mapping port 3000 for the web UI and 2525 for SMTP, then point your app's SMTP host and port configuration at the container. developers setting up local email testing workflows can find setups like this via daily.dev."}},{"@type":"Question","name":"How do I send templated emails with Razor in FluentEmail for .NET?","acceptedAnswer":{"@type":"Answer","text":"Chain AddRazorRenderer() onto the FluentEmail dependency injection setup alongside AddSmtpSender, then use UsingTemplateFromFile with a path to a .cshtml template and a model object instead of manually setting Body. FluentEmail also supports UsingTemplate and UsingTemplateFromEmbedded for other templating sources. daily.dev helps developers tracking down templating patterns like Razor-based emails in .NET stay informed."}}]} ```