Why doesn't sending emails via smtp work?

Question

PHP

Hello! My script broke by itself here) In general, after the site of the engine developer was closed, letters to the mailbox stopped coming. One person managed to make a crutch, but because of this, support for html letters does not work. Please tell me how to fix the first option) I am attaching 2 code options at once, it doesn’t work on the first one, it works on the second one, but it doesn’t support html 1
- freetexthost.com/hsmwen2h3f
2 - freetexthost.com/wr3u4nzsmo
left links to third-party services.