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.

	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 · 1 custom domain · 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, $1099 at higher volumes up to 2,500,000.	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	No SOC 2 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.