An email service provider (ESP) is a company that provides the infrastructure and tools to send marketing and transactional email at scale — managing servers, authentication, deliverability, and reporting so senders don't have to run their own mail servers. Mailpro is an ESP built on Swiss-hosted, authenticated infrastructure.
What an ESP handles
An ESP maintains sending IPs and their reputation, handles SPF, DKIM, and DMARC authentication, processes bounces and unsubscribes, and reports on delivery and engagement — with campaign tools on top. See Mailpro's SMTP sending server and email campaign tools.
Why it matters
Sending bulk email from an ordinary mailbox gets you blocked quickly; an ESP protects deliverability and keeps you compliant. When comparing providers, weigh deliverability, data hosting, and pricing model — see how to choose email marketing software. Related: SMTP and deliverability.
Mailpro and email delivery
An ESP that puts your mail in the inbox
Authenticated sending, Swiss hosting, and reputation management — so your campaigns actually arrive.