SMTP (Simple Mail Transfer Protocol) is a protocol used for sending and relaying email messages over a network. To support SMTP, you would typically need a mail server or email server. There are several types of mail servers, and the choice of which one to use depends on your specific needs and preferences. Here are some common types of mail servers that can support SMTP: Source - https://www.milesweb.in/blog/hosting/server/which-type-of-server-would-support-smtp/?utm_source=PdfArticle&utm_campaign=Pdf-dineshk&utm_medium=PdfPromotion-021023