openapi: 3.0.1 info: title: Postmark Account Activate Messages > Outbound > Opens API description: 'Postmark makes sending and receiving email incredibly easy. The Account-level API allows users to configure all Servers, Domains, and Sender Signatures associated with an Account. ' version: 0.9.0 servers: - url: //api.postmarkapp.com/ tags: - name: Messages > Outbound > Opens paths: /messages/outbound/opens: get: tags: - Messages > Outbound > Opens summary: Postmark Opens for all messages parameters: - name: count in: query schema: type: string description: Number of bounces to return per request. Max 500. example: - name: offset in: query schema: type: string description: Number of bounces to skip. example: - name: recipient in: query schema: type: string description: Filter by the user who was receiving the email example: - name: tag in: query schema: type: string description: Filter by tag example: - name: client_name in: query schema: type: string description: Filter by client name, i.e. Outlook, Gmail example: - name: client_company in: query schema: type: string description: Filter by company, i.e. Microsoft, Apple, Google example: - name: client_family in: query schema: type: string description: Filter by client family, i.e. OS X, Chrome example: - name: os_name in: query schema: type: string description: Filter by full OS name and specific version, i.e. OS X 10.9 Mavericks, Windows 7 example: - name: os_family in: query schema: type: string description: Filter by kind of OS used without specific version, i.e. OS X, Windows example: - name: os_company in: query schema: type: string description: Filter by company which produced the OS, i.e. Apple Computer, Inc., Microsoft Corporation example: - name: platform in: query schema: type: string description: Filter by platform, i.e. webmail, desktop, mobile example: - name: country in: query schema: type: string description: Filter by country messages were opened in, i.e. Denmark, Russia example: - name: region in: query schema: type: string description: Filter by full name of region messages were opened in, i.e. Moscow, New York example: - name: city in: query schema: type: string description: Filter by full name of region messages were opened in, i.e. Moscow, New York example: responses: '200': description: Successful response content: application/json: {}