# Underused Mail Setting Retirement

As we continuously modernize our email delivery infrastructure, we have sunset some sparsely used features in order to improve efficiency.

| Mail Setting                                                                                                                      | Recommended Action                                                                                                                                                                                                                                |
| --------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Plain Content** is an option within SendGrid Mail Settings that disables the automatic conversion of plain text emails to HTML. | If you would like to maintain open and click tracking, you must send HTML. Otherwise, you can continue sending plain text emails without open and click tracking.                                                                                 |
| [**Gravatar**](https://en.gravatar.com/) third party integration.                                                                 | Due to low adoption among customers we decided to sunset this feature.                                                                                                                                                                            |
| **Sections** is a form of mail merge where sections of an email content can be customized by recipient.                           | We recommend using Twilio SendGrid [transactional templates](/docs/sendgrid/ui/sending-email/how-to-send-an-email-with-dynamic-templates#send-a-transactional-email) with handlebars syntax through our v3 API.                                   |
| **BCC** automatically BCCs an email address for every email sent.                                                                 | We recommend identifying bcc as a [personalization](/docs/sendgrid/for-developers/sending-email/personalizations#sending-a-single-email-to-a-single-recipient-with-a-cc-and-a-bcc) in each API call.                                              |
| **Spam Checker** is an option within SendGrid Mail Settings that checks outbound messages for spam content.                       | We recommend using [Email Testing](/docs/sendgrid/ui/sending-email/email-testing/) to maximize your deliverability.                                                                                                                               |
| **Drop feature** is a test feature that goes through the processing of mail, but just drops it without delivering in the end.     | We have a [Sandbox Mode](/docs/sendgrid/for-developers/sending-email/sandbox-mode/) feature which allows you to send a test email to ensure that your request body is formatted correctly without delivering the email to any of your recipients. |
| **Sendwithus** third party Integration                                                                                            | We recommend using Twilio SendGrid Marketing Campaigns.                                                                                                                                                                                           |
| **DomainKey** is an old feature for signing emails which has been deprecated by email industry.                                   | Users should utilize [DKIM](/docs/sendgrid/glossary/dkim) which is the new standard for signing emails.                                                                                                                                           |