> For the complete documentation index, see [llms.txt](https://help.payorcrm.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.payorcrm.com/advanced-settings.md).

# Advanced settings

- [Using your own Email Server](https://help.payorcrm.com/advanced-settings/using-your-own-email-server.md)
- [Credit Card surcharge and Late fees](https://help.payorcrm.com/advanced-settings/credit-card-surcharge-and-late-fees.md)
- [IMAP settings](https://help.payorcrm.com/advanced-settings/imap-settings.md)