The SendGrid Email API provides a simple, secure, and scalable way to send transactional and marketing emails from your application. The API allows you to customize email content and delivery settings, track email open and click-through rates, among many other things.
To use the SendGrid Email API, you will need to:
SMTP (Simple Mail Transfer Protocol) is a standard protocol used for sending email messages between servers and email clients.
To use Gmail SMTP with third-party applications, you will need to follow these general steps:
Gmail has a security feature that blocks access to Gmail accounts from less secure apps. You will need to enable less secure apps in your Gmail account settings to use Gmail SMTP with third-party applications. To do this, go to your Gmail account settings, click "Security", and turn on "Less secure app access".
To use Gmail SMTP with third-party applications, you will need to generate an app password. This is a unique password that is specifically used for the application you want to use. To generate an app password, go to your Gmail account settings, click "Security", and scroll down to "App passwords". Generate a new app password for the application you want to use.
Once you have enabled less secure apps and generated an app password, you will need to configure FusionInvoice to use Gmail SMTP on the email tab in system settings by choosing “SMTP” as your email sending method. You will them need to enter the following information:
Note: You cannot send from an email address that does not exist
Some third-party applications may have additional configuration options or require additional settings, so be sure to consult the application's documentation or support resources for more information.
To use Outlook SMTP with third-party applications, you will need to follow these general steps:
Outlook requires SMTP authentication to send emails from third-party applications. To enable SMTP authentication, log in to your Outlook account and click on "Settings" (gear icon in the upper right corner), then select "View all Outlook settings" > "Mail" > "Sync email". Under "Access to less secure apps", enable the "Allow apps that use less secure sign in" option.
To use Outlook SMTP with third-party applications, you will need to generate an app password. This is a unique password that is specifically used for the application you want to use. To generate an app password, go to your Microsoft account security settings, click "More security options", and scroll down to "App passwords". Generate a new app password for the application you want to use.
Once you have enabled SMTP authentication and generated an app password, you will need to configure FusionInvoice to use Outlook SMTP on the email tab in system settings by choosing “SMTP” as your email sending method. You will them need to enter the following information:
Note: You cannot send from an email address that does not exist
This is a built-in mail function that allows you to send email messages from FusionInvoice. There is no configuration, other than choosing “PHPMail” as your mail sending method.
We do not recommend this method, as using it can result in deliverability issues, particularly in shared hosting environments.
Sendmail is a mail transfer agent (MTA) that is used to transfer email messages from one computer to another over the Internet. The Sendmail method refers to the use of the Sendmail program to send email messages from a web server or other computer.
Sendmail is one of the most widely used MTAs and is commonly installed on Unix-based systems. It provides a simple and reliable way to send email messages from the command line or from a script.
To use the Sendmail method to send email messages from your PHP script: