# Send emails with Go

## Prerequisites

Before you start, you'll need:

- A Resend [API key](/guides/get-started-create-an-api-key)
- A [verified domain](/guides/get-started-add-a-domain)

## Guide

:::::steps
::::step{title="Install"}
Get the Resend Go SDK.

:::code-group
```bash bash theme={"theme":{"light":"github-light","dark":"vesper"}}
go get github.com/resend/resend-go/v4
```
:::
::::

:::step{title="Send email using HTML"}
The easiest way to send an email is by using the `html` parameter.

```Go main.go theme={"theme":{"light":"github-light","dark":"vesper"}}
package main

import (
	"fmt"

	"github.com/resend/resend-go/v4"
)

func main() {
    client := resend.NewClient("re_xxxxxxxxx")

    params := &resend.SendEmailRequest{
        From:    "Acme <onboarding@resend.dev>",
        To:      []string{"delivered@resend.dev"},
        Html:    "<strong>hello world</strong>",
        Subject: "Hello from Golang",
        Cc:      []string{"cc@example.com"},
        Bcc:     []string{"bcc@example.com"},
        ReplyTo: "replyto@example.com",
    }

    sent, err := client.Emails.Send(params)
    if err != nil {
        fmt.Println(err.Error())
        return
    }
    fmt.Println(sent.Id)
}
```
:::
:::::

## Examples

::::card-grid
:::card{title="Basic Send" href="https://github.com/resend/resend-examples/tree/main/go-resend-examples/examples/basic_send" icon="arrow-up-right-from-square"}
Basic email sending
:::

:::card{title="Attachments" href="https://github.com/resend/resend-examples/tree/main/go-resend-examples/examples/with_attachments" icon="arrow-up-right-from-square"}
Send emails with file attachments
:::

:::card{title="Inline Images (CID)" href="https://github.com/resend/resend-examples/tree/main/go-resend-examples/examples/with_cid_attachments" icon="arrow-up-right-from-square"}
Embed inline images using CID
:::

:::card{title="Templates" href="https://github.com/resend/resend-examples/tree/main/go-resend-examples/examples/with_template" icon="arrow-up-right-from-square"}
Send emails using Resend hosted templates
:::

:::card{title="Scheduling" href="https://github.com/resend/resend-examples/tree/main/go-resend-examples/examples/scheduled_send" icon="arrow-up-right-from-square"}
Schedule emails for future delivery
:::

:::card{title="Prevent Threading" href="https://github.com/resend/resend-examples/tree/main/go-resend-examples/examples/prevent_threading" icon="arrow-up-right-from-square"}
Prevent email threading on Gmail
:::

:::card{title="Audiences" href="https://github.com/resend/resend-examples/tree/main/go-resend-examples/examples/audiences" icon="arrow-up-right-from-square"}
Manage contacts and audiences
:::

:::card{title="Domains" href="https://github.com/resend/resend-examples/tree/main/go-resend-examples/examples/domains" icon="arrow-up-right-from-square"}
Create and manage sending domains
:::

:::card{title="Inbound Webhooks" href="https://github.com/resend/resend-examples/tree/main/go-resend-examples/examples/inbound" icon="arrow-up-right-from-square"}
Receive and process inbound emails
:::

:::card{title="Double Opt-in" href="https://github.com/resend/resend-examples/tree/main/go-resend-examples/examples/double_optin" icon="arrow-up-right-from-square"}
Double opt-in subscription flow
:::

:::card{title="Chi App" href="https://github.com/resend/resend-examples/tree/main/go-resend-examples/chi_app" icon="arrow-up-right-from-square"}
Full Chi web framework application
:::

:::card{title="Gin App" href="https://github.com/resend/resend-examples/tree/main/go-resend-examples/gin_app" icon="arrow-up-right-from-square"}
Full Gin web framework application
:::
::::

## Related pages

- [Send emails with Encore](./get-started-send-with-encore-go.md)

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