This listing is posted by the APIs.io catalog. APIs.io does not own or sell this API; you get access from the provider, SMTP2GO.
The SMTP2GO Activity API lets you search email activity. It is part of the SMTP2GO v3 API, served from https://api.smtp2go.com/v3. SMTP2GO is a New Zealand-founded email and SMS delivery platform, running since 2006, that sends and tracks transactional and marketing messages over SMTP relay or a JSON REST API from data centres in the United States, the European Union and Australia. Developers, support teams and anyone who needs to check what happened to a message would use the activity search. The wider v3 API covers sending email and SMS, sender domain verification, templates, webhooks, suppressions, subaccounts, dedicated IPs, the email archive and delivery statistics. The provider also ships a remote MCP server and a published Agent Skill.
Published for this API: OpenAPI and APIs.json artifacts. Documentation is at https://developers.smtp2go.com/docs/introduction-guide.
Kin Score: 73.3 (exemplar band). Agent Readiness: 39.1 (agent-ready band), scored 2026-11-06.
Pricing: set by the provider. The catalog lists the access model as freemium with self-serve signup.
Condition: a live hosted API, listed in the APIs.io catalog; you call the provider's endpoint.
Catalog listing: https://apis.io/apis/smtp2go/smtp2go-activity-api/ Provider: https://www.smtp2go.com/