Action mailer not sending gmail

The frustration of not being able to send emails using Action Mailer!

Here are some common issues and solutions to help you troubleshoot why your Action Mailer is not sending emails using Gmail:

1. Gmail's less secure app setting: Gmail has a setting called "Less secure app access" that needs to be enabled to allow Action Mailer to send emails. You can enable this setting by following these steps:
   • Go to your Google Account settings.
   • Click on "Security" and then "Less secure app access".
   • Toggle the switch to "On".
2. SMTP settings: Make sure your SMTP settings are correct. You can find the SMTP settings in your Gmail account settings:
   • Go to your Google Account settings.
   • Click on "Forwarding and POP/IMAP" and then "Enable IMAP".
   • Note down the SMTP server, port, and authentication settings.
3. Authentication issues: Ensure that your Action Mailer is using the correct authentication settings. You can use either "plain" or "login" authentication. For example:

   ActionMailer::Base.smtp_settings = {
   :address              => 'smtp.gmail.com',
   :port                 => 587,
   :domain               => 'your-domain.com',
   :user_name            => '[email protected]',
   :password             => 'your-password',
   :authentication       => 'plain'
   }

4. SSL/TLS issues: Make sure your Action Mailer is using the correct SSL/TLS settings. You can use either "TLS" or "SSL" encryption. For example:

   ActionMailer::Base.smtp_settings = {
   :address              => 'smtp.gmail.com',
   :port                 => 587,
   :domain               => 'your-domain.com',
   :user_name            => '[email protected]',
   :password             => 'your-password',
   :authentication       => 'plain',
   :ssl                 => true,
   :tls                 => true
   }

5. Firewall or network issues: Check if your firewall or network settings are blocking the outgoing email connection. You can try using a different SMTP server or a different email provider to test if the issue is specific to Gmail.
6. Action Mailer configuration: Ensure that your Action Mailer is configured correctly in your Rails application. You can check the configuration by running rails c and then ActionMailer::Base.smtp_settings.
7. Email sending limits: Gmail has limits on the number of emails you can send per day. If you're sending a large number of emails, you may hit these limits. You can check the Gmail sending limits here.

If none of these solutions work, you can try enabling Gmail's "Debugging" feature to get more information about the issue. To do this, follow these steps:

1. Go to your Google Account settings.
2. Click on "Security" and then "Less secure app access".
3. Toggle the switch to "On".
4. Go to your Rails application's console and run ActionMailer::Base.deliveries.
5. Send an email using Action Mailer.
6. Check the console output for any error messages.

I hope these suggestions help you troubleshoot and resolve the issue with your Action Mailer not sending emails using Gmail!