Golang Send Email Smtp Example

Golang Send Email Smtp Example – As Go developers, you often work deep in the backend. When it comes time to send an email notification, sending protected HTML to your users via SMTP can seem pretty alien. It might be tempting to stick to just in-app notifications, but that’s not good for user retention.

This tutorial will introduce you to three different methods of sending emails in Golang: directly using the SMTP or Gomail package, API requests for other email services such as Amazon SES or Mailgun, and using multi-channel information abstraction services. Such as .

Golang Send Email Smtp Example

Since you collect personal information (such as contact details) from users on your platform, it is important that you back up your data before using it. To prevent malicious attacks on your app, remove HTML elements, slashes, and tags. You’ll want to perform this cleanup in the trusted system (back-end) and not in the UI, as malicious users can disable it.

Day 13: The Mailer

The email you plan to send will determine whether you need HTML or plain text. HTML handles emails, including ads, external links, logos, formatting, and styles. One of the main disadvantages of HTML emails is that they are prone to fall into users’ spam boxes. Or worse, their version can be deleted due to antivirus software. HTML emails are more vulnerable to phishing or malware attacks than plain text messages.

Plain text is exactly what it means: just words on the page. But sometimes simple text is all it takes to get your message across. This email form is often used for communication (e.g. when the sales team and customers can exchange information via chat). Some important advantages are: plain text emails load quickly and open quickly on any type of device.

If you want to share images or documents (or anything else), add them to your email using third-party packages like Gomail:

You may encounter a third type of email, sending a delayed service. This is not a marketing email: it is not the same message for every user. This is an update sent to many users due to a delayed service or backup process. An example would be a bi-weekly warning that a user’s password is about to expire. Often it’s the things that work less well because the same email works fine in the test. However, trying to send hundreds of emails often fails due to the speed limit from the email server. The system seems to act as a barrier between email services and may make these challenges unnecessary.

Nodejs Send Smtp Email

Using the Golang SMTP package, you can configure the back-end service to send emails using any SMTP server.

Before you start, you’ll need a Google account and allow access to less secure apps. You will also need a password if you have enabled 2-Step Verification. Of course, this is not a good way to run in a production environment. Even in your experiment, you should set an environment variable to these values ​​and load it

In the following code, the “Plain Auth” function takes four arguments: username, username, password, and host. The attribute should be left as an empty string.

Package main import “net/smtp” func main() host:= “smtp.gmail.com” port := “587” address:= host +”:” + port topic:=” Subject: This is the mail topic n ” body := “This is the body of the message” := [] byte(subject + body) auth := smtp.PlainAuth(“”, from, password, host) err := smtp.SendMail( addresses, auth, from, to , message) if err != nil }

Sending E Mails With Go.

The message value is plain text only, but SMTP packets may contain HTML code for the content. Note that both

SMTP packets are great for sending basic emails that don’t require a lot of processing.

Default SMTP packets may be throttling. For example, you cannot add attachments to an email. Gomail offers various services such as HTML templates, embedded images, and automatic uploads. You need Go 1.2 or later to use Gomail. You can install it with this command:

Because you’re using third-party packages, the “Attach” feature attaches external files to your email. The “NewDialer” and “DialAndSend” functions open a connection to the SMTP server and send an email.

Test Your Email Flow With Mailhog, A Fake Smtp Server

Third-party email API services like SendGrid, Mailgun, and Amazon Simple Email Service have dedicated platforms that allow you to send emails efficiently.

Using an SMTP server, you can programmatically send emails. Still, third-party API servers allow you to send tens of thousands of emails per day, which are scalable, efficient, and provide back-end auditing. Normally, you will have the option to use the web API or SMTP when setting up your account.

Amazon – Simple Email Service (SES) Amazon’s Simple Email Service helps you send emails cheaply. One major downside is that AWS in general and SES are actually meant for people who use them regularly. Despite the “easy” in the name, over time you will realize that you need to be an expert in SES to use it without problems.

With Amazon’s free SES tier, depending on where your app is hosted, you can send up to 62,000 emails per month.

Sending Emails With Go (golang) And Gmail

To get started with Amazon SES and integrate with Go, first sign up to add and monitor your domains and emails. If you want to use SMTP, retrieve your credentials and replace them with Gomail in the Golang app.

You can also use Amazon SES console or [Amazon SES API](https://docs.aws.amazon.com/ses/latest/DeveloperGuide/examples-send-using-sdk.html0. Consider using Amazon SES if you need cheaper platform or if you are hosting your web application on AWS.

Mailgun Mailgun is another service that helps you send automated emails. One of its biggest advantages is the ability to provide more in-depth analytics compared to Amazon SES. It also includes an email verification feature to help eliminate invalid email addresses and reduce bounce rates.

Mailgun isn’t as cheap as Amazon SES, but it’s easier to get started and has better documentation.

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Note: It’s important to send a test email to any email service to know if the email is going to your spam, promotion or secure inbox.

Sometimes you may want to send notifications through various channels, including email, push notifications, and SMS. This is what multi-channel display systems are designed to do.

Is a multi-channel display system that can help you create and send notifications quickly. Using the same API, you can send messages in multiple languages.

To connect with Go, create an account and complete the registration process, which will take you through creating and sending your first post.

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Select Developer from the left menu, then select the “Create Post” button. You can edit the title after creating it.

Then you need to add the display feed you want to use for this post. You can start with one channel, such as email, and add others later. For example, to send a message from Gmail, you can click and sign in from Gmail, start sending the email. You can enter your Twilio username to send an SMS.

Once you have selected at least one channel, you can start adding content to your presentation using content blocks. Content blocking types include text, images, buttons, and other options. You can also add a dynamic variable that can be passed when sent using curly braces.

When you’re done with content in one channel, open another and drag the created blocks into the content library. dynamically adjusting content blocks to match any technical specification. You can use the toolbar to add new content blocks that can be used on any channel.

How To Send Emails From Email Clients Using Smtp

To test a post, you need to create a test user profile. it will guide you to create a new test profile after clicking “Preview”. If your user is stored in the control panel interface, you can directly refer to user-id or list_id to refer to a well-organized list of multiple users.

This is what the sample looked like after adding the user profile and data to the test program:

You can try sending a message in the UI and check the data log to make sure it was sent successfully.

With the Go SDK, you can send messages directly from your application code. While our Presentation API allows you to send messages via POST requests, the SDK makes it much easier without having to handle the request directly.

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Import package main (“context” “log” “github.com/try/-go/v2” ) func main() , “template”: “”, }, }, ) if err != nil log. println(request id) }

Use your logo. To get a review token, go to the API Key in Settings as shown in the screenshot below:

Check where you are sending from (upper right corner of the studio). If you are working in a production environment, use the first production key. If you are working in a test environment, use a test key.

If you encounter any error, checking the data log will provide many situations where you can figure out how to fix it. Check the upload API reference to learn more about other parameters.

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