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Email & messaging
TS

Twilio SendGrid

Transactional and marketing email API.

Agents can send transactional email and manage templates/lists when domains and approvals are configured.

Agent access evidence
API
native

Mail Send API and v3 APIs cover email sending, templates, contacts, and stats.

Evidence
Browser
strong

Console helps review sender auth, templates, stats, and suppression lists.

Evidence
Account creation
strong

Self-serve signup with sender/domain verification.

Evidence
Pricing clarity
strong

Pricing is public by email volume and product.

Evidence
Docs quality
strong

Docs cover API reference, scheduling, webhooks, and delivery concepts.

Evidence