The SocketLabs Email Delivery Golang library allows you to easily send any type of email message supported by our Injection API, from a simple message to a single recipient, to a complex bulk message sent to multiple recipients. 

Basic Message

A basic message is an email message like you’d send from a personal email client such as Outlook. A basic message can have many recipients, including multiple, To Addresses, CC Addresses, and even BCC Addresses. You can also send a file attachment in a basic message.

import ( 

func main() {
	client := injectionapi.CreateClient(000001, "YOUR-API-KEY")

	basic := message.BasicMessage{}

	basic.Subject = "Sending a Basic Message"
	basic.HtmlBody = "<html>This is the Html Body of my message.</html>"
	basic.PlainTextBody = "This is the Plain Text Body of my message."

	basic.From = message.EmailAddress{EmailAddress: "[email protected]"}
	basic.ReplyTo = message.EmailAddress{EmailAddress: "[email protected]"}

	//A basic message supports up to 50 recipients and supports several different ways to add recipients
	basic.AddToEmailAddress("[email protected]")   //Add a To address by passing the email address
	basic.AddCcEmailAddress("[email protected]")  //Add a CC address by passing the email address and a friendly name
	basic.AddBccEmailAddress("[email protected]") //Add a BCC address by passing the email address

	//Send the message
	_, _ = client.SendBasic(&basic)


Bulk Message

A bulk message usually contains a single recipient per message and is generally used to send the same content to many recipients, optionally customizing the message via the use of MergeData.

import (

func main() {

	client := injectionapi.CreateClient(000001, "YOUR-API-KEY")

	//Build the message
	bulk := message.BulkMessage{}

	bulk.Subject = "Sending A Bulk Message"
	bulk.HtmlBody = "<html>This is the Html Body of my message sent to the recipient with %%EyeColor%% eyes.</html>";
	bulk.PlainTextBody = "This is the Plain Text Body of my message sent to the recipient with %%EyeColor%% eyes.";
	bulk.From = message.EmailAddress{EmailAddress: "[email protected]"}
	bulk.ReplyTo = message.EmailAddress{EmailAddress: "[email protected]"}
	//Add Bulk Recipients
	recipient1 := bulk.AddToFriendlyBulkRecipient("[email protected]", "Recipient #1")
	recipient1.AddMergeData("EyeColor", "Green")

	recipient2 := bulk.AddToFriendlyBulkRecipient("[email protected]", "Recipient #2")
	recipient2.AddMergeData("EyeColor", "Blue")

	//Send the message
	_, _ = client.SendBulk(&bulk)


How to Get Started

To run these samples you will need to obtain an API Key and ServerId number from your SocketLabs Control Panel.

I don’t have a SocketLabs Account

Create Your Account

I have a SocketLabs account

Get Your API Key & Server ID

About our Code Libraries

SocketLabs’ email API plays well with your favorite platforms and development frameworks, including .NET, PHP, Java, Node.js, Python, Go, and more! As a developer, our APIs for sending email give you all the tools you need to embed powerful email functionality into your applications.

See All Code Samples on GitHub

Looking for More Libraries & Code Samples?

Speed up development with pre-built libraries and code samples for popular languages. Choose a library below!

You’re in Good Company

We’re Always Here For You

Have questions or need help? Here’s how to reach support:


US: 800-650-1639
International: +1 484-418-1285

Tap to Call

Live Chat

Get your questions answered through live chat.

Start a Live Chat

Help Center

Have questions or need help? Visit our help center.

Get Help

SocketLabs Developers

SocketLabs is Built for Developers, By Developers

Reach the Inbox With Industry-Leading Deliverability

Integrate with Your Application in Minutes