STM32 SMTP testing, and SSL TSL support

Hi, I saw three lines of code mentioning stm32 in EMailSender.h mentioning support for the stm32 built-in ethernet. I have a stm32f103 blue pill with the option of using an ethernet w5100 or enc28j60. I already know it will work plain authentication on sendgrid, but could it work with TLS or SSL authentication on other email servers?