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This guide gives a very practical walkthrough for configuring SMTP email relay on a GoDaddy VPS—something that often causes confusion for developers, especially when standard mail() functions fail or get blocked. The step‑by‑step breakdown of PHP setup, SMTP host selection, relay configuration and handling of common GoDaddy‑specific quirks (such as port restrictions or the need to use their relay service) is particularly valuable. It serves as a strong reference for anyone building contact forms, transactional email flows or automating alerts on a GoDaddy VPS, ensuring you move from “it’s not sending” to “it’s configured correctly and delivering”.