HTML version: https://cooperemail.com/compare/sendgrid

- [Home](/)
- › [Compare](/compare)
- › Sendgrid

Cooper Email is an email API that gives each AI agent its own inbox. [Free is $0 and includes 5 inboxes and 5,000 emails a month](/pricing).

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](https://www.twilio.com/en-us/products/email-api/pricing) · [SendGrid pricing PDF](https://www.twilio.com/content/dam/twilio-com/global/en/pricing/all-pricing/twi121--sendgrid-pricing-pdf-st1.pdf)

|  | [SendGrid](https://www.twilio.com/en-us/products/email-api/pricing) | [Cooper Email](/pricing) |
| --- | --- | --- |
| Free | [Free trial $0/month for 60 days. The pricing page summary lists 100 emails/day.](https://www.twilio.com/en-us/products/email-api/pricing) | [$0 · 5 inboxes · 5,000 emails/month · 1 custom domain · ongoing, no trial clock](/pricing) |
| Essentials | [Starting at $19.95/month. The pricing PDF lists 50,000 emails at $19.95 and 100,000 at $34.95.](https://www.twilio.com/en-us/products/email-api/pricing) | [Starter $12/month · 25 inboxes · 25,000 emails/month · 15 custom domains](/pricing) |
| 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.](https://www.twilio.com/en-us/products/email-api/pricing) | [Pro $99/month · 300 inboxes · 250,000 emails/month · 200 custom domains](/pricing) |
| Mailbox | [Send API, inbound parse, and event webhooks. Not an agent-owned searchable inbox.](https://www.twilio.com/en-us/products/email-api/pricing) | [Inbox per agent, stored mail, account full-text search, MCP](/pricing) |
| Compliance | [Twilio lists SOC 2 Type II on the Email API pricing comparison](https://www.twilio.com/en-us/products/email-api/pricing) | [No SOC 2 report](/pricing) |

- 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.

[All comparisons](/compare) · [Pricing](/pricing) · [AgentMail alternatives](/alternatives/agentmail) · [FAQ](/faq)