Retrieved 2026-09-27
Cooper Email vs Twilio SendGrid
Twilio SendGrid is a high-volume email API. Cooper is an agent inbox with a smaller, included mailbox.
SendGrid’s free offering on the pricing page is a 60-day trial, not an ongoing free inbox.
Sources: Twilio Email API pricing · SendGrid pricing PDF
| SendGrid | Cooper Email | |
|---|---|---|
| Free | Free trial $0/month for 60 days. The pricing page summary lists 100 emails/day. | $0 · 5 inboxes · 5,000 emails/month · 0 custom domains · ongoing, no trial clock |
| Essentials | Starting at $19.95/month. The pricing PDF lists 50,000 emails at $19.95 and 100,000 at $34.95. | Starter $12/month · 25 inboxes · 25,000 emails/month · 15 custom domains |
| Pro | Starting at $89.95/month. The pricing PDF lists 100,000 emails at $89.95, then $249, $499, $799, and $1,099 at higher volumes up to 2.5 million. | Pro $99/month · 300 inboxes · 250,000 emails/month · 200 custom domains |
| Mailbox | Send API, inbound parse, and event webhooks. Not an agent-owned searchable inbox. | Inbox per agent, stored mail, account full-text search, MCP |
| Compliance | Twilio lists SOC 2 Type II on the Email API pricing comparison | SOC 2 is a roadmap, not a current report |
- Premier is custom. This page does not invent a Premier price.
- SendGrid volume is the point of that product. Cooper is not priced as a multi-million-message relay.