Serif

Serif is an AI executive assistant for business owners, founders, sales professionals, and small teams that automates day-to-day email work in Gmail and Outlook.

Key capabilities include:

• Inbox organization and categorization that labels and filters messages (including spam and marketing) to keep priority threads visible.
• Reply drafting in a true-to-you voice, with multiple response options and customizable tone so users can review and send quickly.
• Meeting scheduling with calendar integration, plus follow-up tracking and reminders to prevent deals and requests from going cold.
• Playbooks and a knowledge base that store business context and standard operating procedures, helping the assistant handle repetitive administrative email tasks more consistently.

Pricing: Paid with a free trial. Essentials is $20/month; Pro is $50/month; Team is $50/user/month; Enterprise pricing is available.

Notable for its privacy-first, enterprise-grade security posture (SOC 2 Type 2, GDPR, and HIPAA compliance) and background assistant workflow that pre-drafts replies directly where teams already work.