SendGrid
Twilio's email API and marketing campaigns, with contacts, lists, segments and Single Sends.
Updated Sep 27, 2026
Overview
Twilio SendGrid sends transactional email through its v3 Mail Send API and runs Marketing Campaigns: contacts, lists and segments, and Single Sends to them.
The CLI is the Twilio CLI, whose built-in SendGrid commands send email with
SENDGRID_API_KEY. EU regional subusers send mail through
https://api.eu.sendgrid.com. Twilio's MCP server at
https://mcp.twilio.com/docs indexes SendGrid's docs but can't call the API.
Workflows
Workflows that use SendGrid's tools.
Tools
What agents can reach at SendGrid.
Create a segmentCreates a segment of the contacts that match an SQL-style query, optionally within one list, that updates as contacts change.
- Create a Single Send
Creates an unscheduled draft marketing email for lists, segments or all contacts, with its content, sender and unsubscribe settings.
- Schedule a Single Send
Sends a Single Send right away when send_at is now, or schedules it for a future ISO 8601 time.
- Send an email
Sends an email from a verified sender, with up to 1,000 personalizations that each set their own recipients.
- Create or update contacts
Queues up to 30,000 contacts, or 6 MB, to be created or updated in Marketing Campaigns and returns a job ID.