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    #SMTP ports

    2 articles tagged with SMTP ports.

    Email API vs SMTP: Which to Use When
    Transactional & SMTP

    Email API vs SMTP: Which to Use When

    An email API POSTs JSON over HTTPS; SMTP relay runs a multi-step protocol conversation on port 587. This guide compares the two on latency, batching, error handling, templates, and vendor lock-in, includes a full port reference table, and shows the hybrid setup most teams actually end up running.

    Aug 18, 20269 min read
    SMTP Ports Explained: 25, 465, 587 (Which to Use)
    Transactional & SMTP

    SMTP Ports Explained: 25, 465, 587 (Which to Use)

    SMTP uses ports 25, 465, 587, and 2525. Here's what each port does, how they handle encryption, and which one to use when sending email.

    Jul 14, 20268 min read
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