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Business Infrastructure6 min readJuly 31, 2026
How to Choose Email Sending Infrastructure
Match sending capacity to real needs instead of buying the largest plan.
Estimate normal daily volume, peak campaign volume, number of brands or domains, reply requirements, and the applications that need SMTP or IMAP access. Then confirm authentication, logging, bounce handling, rate controls, and support.
Capacity claims are not a target. Begin below the maximum, pace messages, and increase only when reputation signals remain healthy. Keep transactional and marketing traffic separate when their audiences and risk profiles differ.
Apply this guidance to your business context and the rules that govern your recipients. Keep consent or legitimate-interest records, honor opt-outs, and minimize stored contact data.