Selenium Easy Demo. Selenium is a popular tool for automating web browsers, and it can be used for various web testing tasks. To ensure that your emails containing course information do not go to spam when sent in bulk, there are several best practices you can follow:

1. Use a Trusted Email Service: Consider using a reputable email service provider with a good email delivery reputation, such as Gmail or SendGrid.

2. Authenticate Your Domain: Implement DomainKeys Identified Mail (DKIM) and Sender Policy Framework (SPF) authentication for your email domain to prove the authenticity of your emails.

3. Maintain a Clean Email List: Ensure that your email list is up-to-date and contains valid email addresses. Remove any invalid or bouncing email addresses regularly.

4. Avoid Spammy Content: Craft your email content carefully and avoid using spammy language, excessive capitalization, or too many images. Make sure your emails provide value to the recipients.

5. Use Double Opt-In: Implement a double opt-in process, where recipients confirm their subscription to your emails. This ensures that you have a list of engaged and interested recipients.

6. Segment Your List: Segment your email list based on recipient interests or demographics. This allows you to send targeted and relevant content to specific groups.

7. Monitor Engagement: Keep an eye on email engagement metrics like open rates and click-through rates. High engagement can help your emails avoid spam filters.

8. Avoid Attachments: Instead of attaching course information as files, host the content on a web server and provide links in your emails. Many email providers are cautious about attachments in bulk emails.

9. Set Up Feedback Loops: Some email service providers offer feedback loop services that can help you identify and remove recipients who mark your emails as spam.

10. Regularly Test and Adjust: Continuously monitor your email delivery and adjust your email sending practices based on the feedback and data you receive.