SMTP.com
Transactional and email relay API for high-volume sending
SMTP.com is an email delivery and relay service that sends transactional and marketing emails on behalf of businesses, addressing the need to reach subscriber inboxes reliably while protecting sender reputation. It offers an Email Relay API, shared and dedicated IP options, and detailed reporting, with support for migrations from other providers.
Key capabilities include Reputation Defender, an optional add-on that monitors list health and suppresses invalid addresses before sending, and the Insight Engine, an optional add-on providing data-enriched customer profiles. Integrations are available with WordPress, Shopify, Google Sheets, Gmail, Slack, Trello, Airtable, and others. High-volume senders receive a dedicated platform instance with a dedicated IP and MTA, webhooks and callbacks, and on-demand statistics aggregation.
Plans are packaged by monthly email volume, starting at an entry tier with a shared IP and scaling through dedicated-IP tiers to custom-quoted high-volume instances. Reputation Defender and Insight Engine are available as optional add-ons on all plans. Custom quotes are available for high-volume senders, custom API or platform needs, and managed service or migration requirements.
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