Search for a command to run...
Alfred is a software engineer and cyber security specialist based in Enugu, Nigeria. He is passionate about solving real-world problems through well-crafted software and leveraging blockchain technology.
No comments yet. Be the first to comment.
The tech industry is changing fast—but not in the way most people think. By 2026, success in engineering won’t be about chasing the newest tools or stacking buzzwords on a résumé. It will be about depth, ownership, and usefulness. Here’s a grounded l...
1. Server Streaming RPC: Description: In this type of RPC, the client sends a single request to the server, and the server responds with a stream of messages. The client reads from this stream of responses until there are no more messages. Use Case...
Email communication is a crucial aspect of many applications, and Amazon Simple Email Service (SES) provides a reliable and scalable solution for sending emails in the Amazon Web Services (AWS) environment. I've created a go package that facilitates ...
Introduction This article shows a complete setup on how you can verify a signature sent by paystack when they make a POST request to your server. I'm using the bun http router as my go lang framework. I really do not have strength for long talks, so ...
Funny title, but that's the reality from January to December. So, you're here to hear some gist about my 2023, say less. First I just want to take a moment to laugh small, 😂😂😂😂 why? the plans I had for 2023 come be like say na small pikin write a...
Have you ever wanted to send bulk emails that have dynamic content to multiple users? Well, you are not alone and I'll be showing you the exact code snippet I used for this purpose but in PHP. In order to successfully send emails, I made use of SendGrid PHP SDK which is a library by the Sendgrid team for sending emails efficiently and for FREE too.
Add Twilio SendGrid to your composer.json file. If you are not using Composer, I highly recommend it. It's an excellent way to manage dependencies in your PHP application.
{
"require": {
"sendgrid/sendgrid": "~7"
}
}
or simply just install via the terminal using the command:
composer require "sendgrid/sendgrid"
An API key is required to authenticate your request and you can always get one when you signup on SendGrid. Once you have this key, copy and paste it somewhere in your project, for me, I've been able to read environment variables from a .env file using this package. Just find a way to store your API key and the security of that key is your concern, try not to push that key to public version control platforms like GitHub, Sendgrid would disable this API Key once they find out ( don't ask me how ), and this is bad for production.
<?php
require 'vendor/autoload.php';
use SendGrid\Mail\From;
use SendGrid\Mail\Mail;
use SendGrid\Mail\Personalization;
use SendGrid\Mail\Subject;
use SendGrid\Mail\To;
use SendGrid\Mail\HtmlContent;
use SendGrid\Mail\Substitution;
function sendBulkMail($receipientsData, $from, $subject, $message, $fromName)
{
$from_ = new From($from, $fromName);
$htmlContent = new HtmlContent(
$message
);
$email = new Mail($from_,null,$subject,null, $htmlContent);
foreach ($receipientsData as $reciepient) {
$personalization = new Personalization();
$personalization->addTo(new To(
$reciepient[0],
$reciepient[1]
));
$personalization->setSubject(new Subject($subject));
$personalization->addDynamicTemplateData(new Substitution("-first_name-",$reciepient[1]));
}
$sendgrid = new \SendGrid($_ENV['SEND_GRID']);
try {
$response = $sendgrid->send($email);
print $response->statusCode() . "\n";
return true;
} catch (Exception $e) {
return false;
}
}
$message = "<div>Hello -first_name-</div>";
sendBulkMail([["test@gmail.com","Alfred"],["test2@gmail.com","Star"]],"alfred@codemon.me","Test",$message,"Alfred");
The sendBulkMail function accepts the following parameter
A Multidimensional array of your users' data, each user has an email and a name, think of this as an array of arrays.
Senders email
Email Subject
HTML content ( you can use twig to load your HTML template )
Senders Name
$personalization = new Personalization();
$personalization->addDynamicTemplateData(new Substitution("-first_name-",$reciepient[1]));
In order to personalize emails for each user, we construct a new Personalization class which has helpful methods to set dynamic data for each user. Calling the addDynamicTemplateData method on this class lets us substitute a placeholder with the actual valid on the HTML template. In our case, we want to replace -first_name- with the name of the current user.
It's important to note that your placeholder string (-first_name-) can take any format as you wish, it can look like this {{first_name}} as well.
$sendgrid = new \SendGrid($_ENV['SEND_GRID']);
This line of code simply sets our API key and like mentioned earlier, I'm currently loading environment variables from a .env file, but you can as well just hardcode your API Key( not recommended).
Thanks to Sendgrid, you do not need to set up a ridiculous code block to send emails to multiple users, using this method is fast and saves some costs too. In this blog post, you've learned how to send personalized emails to multiple users using SendGrid PHP SDK, hope it made sense. Leave a comment with your questions and kind words, see you!