![]() Open PuTTY and enter your SSH information in the Host Name (or IP address) and Port fields.From your hPanel dashboard, go to Advanced → SSH Access and take note of the SSH IP, port, username, and password under the SSH details.Connect to your account via an SSH client.To install PHPMailer manually, follow these steps: Otherwise, if you need a newer version or your PHP version is 8+, use the composer2 command. If you need an older Composer version, use the composer command. Our shared and cloud hosting plans include two versions of this software. Installing PHPMailer is quite simple, especially if you have Composer installed. It gives access to a set of functions for sending emails, simplifying the process of configuring PHP mail. PHPMailer is a popular mail-sending library that supports sending via the mail() function or through an SMTP server. It does take a while to get used to and learn the logic. ![]() Can be used to send high amounts of emails in a short period.Supports SMTP, and authentication is integrated over SSL and TLS.Introduces complex email structures, such as HTML documents and attachments.Therefore, external libraries such as PHPMailer are recommended instead Thus, using only a mail() function isn’t sufficient. Sending an email is a complicated process.Not suitable for sending a large number of emails.Hard to set up with SMTP, which will trigger recipient SPAM filters.Backward-compatible so that a PHP version change won’t break the script.Already pre-installed and ready to use, all you need is to have PHP.In this article, we’ll use PHPMailer.īefore we begin, here’s a quick summary of the pros and cons of the PHP mail() function and PHPMailer: ![]() There are many PHP mail packages to choose from, including Pear Mail and Swift Mailer. The native PHP mail() function is not suited for large volumes of emails, as it opens and closes a Simple Mail Transfer Protocol (SMTP) socket connection with each email. ![]() We recommend utilizing an external PHP mailing package if you want to send multiple emails more securely. Gmail Couldn’t Verify That Domain.TLD Sent This Message.Sender Address Rejected: Not Owned by the User.How to Troubleshoot Common PHP Mail and PHPMailer Errors.How to Send Emails Using PHP Mail() Function.To use the Abstract API, create an account and get your private API key. The API also indicates whether the email address is from a disposable email service that does not need identification to be used. When it is too difficult to develop an effective solution, one must turn to the services available on the Internet and ideally choose one of the best email validation APIs.Ībstract provides a free API that allows verification of email addresses, validating their format, and checking if the domain name is routable (in other words: it checks if the server exists). The most efficient solution for email verification with PHP: using Abstract API As one can easily imagine, this is a heavy task. To implement such a verification script, it would be necessary to write complex logic to test the domain name's existence, then query its records to determine if the MX fields are correctly filled in, and finally test if the SMTP server responds correctly. If you know that the email address to validate contains Unicode characters, you must also specify the FILTER_FLAG_EMAIL_UNICODE option as the third parameter. To use filter_var() to perform email format validation, the second parameter must be set to FILTER_VALIDATE_EMAIL. These options depend on the type of filter that is being used. The third parameter allows you to specify options that will determine the filter_var() function's operation.The documentation provides a list of all usable filters. The function allows you to check the format for IP addresses, domain names, and many others, including email addresses. The second parameter defines the type of filter to be applied.The first parameter is the variable to validate.The filter_var() function accepts 3 parameters: PHP natively provides a series of functions for validating and filtering, most notably the filter_var() function, which can validate email address format. How to check the format of an email address in PHP Also, as an alternative, check out our guide for validating emails with regex. Feel free to try out for yourself the code snippets we shared to experiment with validating email addresses in PHP. Unfortunately, correctly verifying an email address is not an easy task, so we put together this detailed guide to help you out.
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