> For the complete documentation index, see [llms.txt](https://documentation.merge.email/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.merge.email/support.md).

# Features documentation

- [Features](https://documentation.merge.email/support/features.md): Here is the list of our features, and related documentation
- [Rich-text emails (HTML)](https://documentation.merge.email/support/rich-text-emails-html.md)
- [Campaign scheduling](https://documentation.merge.email/support/campaign-scheduling.md): In this page we will cover how to schedule your mass email campaign with Mail Merge for Gmail
- [Attachments](https://documentation.merge.email/support/attachments.md): Discover how to add attachments : to your mails with Mail Merge for Gmail
- [Multiple recipients](https://documentation.merge.email/support/multiple-recipients.md): In this page, you will learn how to add multiple recipients in Mail Merge for Gmail
- [Images](https://documentation.merge.email/support/images.md): On this page, you will learn about the different ways to add an Image to your Mail Merge template
- [Email Tracking](https://documentation.merge.email/support/email-tracking.md): On this page, you will learn how to know if your emails sent with Mail Merge for Gmail📣have been opened.
- [Unsubscribe link](https://documentation.merge.email/support/unsubscribe-link.md): Adding an unsubscribe link lets your recipients opt out of your emails, thus reducing the risk of being flagged as spam, and to have a cleaner mailing list.
- [Canceling an Email Campaign](https://documentation.merge.email/support/canceling-an-email-campaign.md): You’ll discover three ways to cancel an email campaign on this page.
- [Email throttling](https://documentation.merge.email/support/email-throttling.md): Email throttling is a way to improve your email deliverability. By reducing the speed of emails sending, it triggers less email providers' attention and ensures your account stays in good standards.