Enveloop

Enveloop, previously named BuildPlane, is a B2B company specializing in engineering, product, and design within the communication technology sector. Based in Birmingham, AL, USA, and operating fully remotely, Enveloop provides a robust API that allows developers to send emails, SMS, and MMS messages efficiently. The company’s services include designing, hosting, and sending messages, all managed through a user-friendly content management UI. Enveloop’s features support dynamic content and developer-friendly formatting options such as Markdown and Mustache. It ensures high deliverability with support for protocols like SPF, DKIM, and DMARC and compatibility across all major email clients and browsers. Additionally, Enveloop offers a scalable pricing model starting with a free Developer Plan that includes 100 messages, supports unlimited team additions and project integrations at no extra cost, and provides detailed logs and a Sandbox environment for testing. The company was part of the Y-Combinator W20 batch and serves clients across the United States and Canada.