email
SendGrid (Twilio)
Legacy email infrastructure at scale — 100B+ emails/year
Twilio-owned email platform. Mature API, mega-scale infra, subuser management, dedicated IPs, SSO, Marketing Campaigns add-on. Used by Uber, Spotify, Airbnb.
Pricing
| Tier | Price | Notes |
|---|---|---|
| Free Trial | Free | 100 emails/day for 60 days. After: upgrade required. |
| Essentials — 50k | $20/mo | 50,000 emails/month. 1 teammate. 2 event webhooks. |
| Essentials — 100k | $35/mo | 100,000 emails/month. |
| Pro — 100k | $90/mo | 100,000/mo. Dedicated IPs + subusers + email validation (2.5k). 1000 teammates. 5 webhooks. |
| Pro — 2.5M | $449/mo | 2,500,000/mo. Same Pro features. |
| Premier (5M+) | Custom | Custom. SSO, custom overage rates, white-glove. |
Limits
| Tier | Metric | Value | Notes |
|---|---|---|---|
| — | attachments max mb | 30 MB | Max attachment size |
| — | dedicated ip pro | Included (Pro+) | Dedicated IP |
| — | email validation | 2,500 (Pro) or 5,000 (Premier) /month | Email validation credits |
| — | marketing campaigns | Separate add-on product (Mkt Campaigns) | Marketing vs transactional split |
| — | ownership | Twilio (acquired 2019) | Owner |
| — | rate limit api | 600 req/min default (request increase if needed) | Default API rate |
| — | sso premier | Only on Premier | SSO availability |
| — | subusers pro | Unlimited subusers (Pro+) | Subuser mgmt |
Features
- Dedicated IPs — Auto IP warmup, multiple IP pools per brand/customer.
- Dynamic Templates — Handlebars-based with versioning + A/B testing on subject/content.
- Email API (v3) — REST + SMTP. Dozens of endpoints for mail, stats, templates, subusers.
- Email Validation — Verify email addresses before sending. Credits per check.
- Event Webhook — Raw stream of send/delivery/bounce/open/click/unsubscribe/spamreport events.
- Inbound Parse — Route incoming mail → your webhook. Attachments + spam score.
- Link Branding — Track links on your own domain for reputation.
- Marketing Campaigns — Separate UI for bulk promotional sends. Segmentation, A/B, automation.
- SAML SSO — Premier tier only. SAML 2.0 auth for account access.
- Stats + Reports — Aggregated + per-category + per-subuser delivery metrics.
- Subusers — Isolate multi-tenant sends. Each subuser has own stats + API key + reputation. · docs
- Suppression Groups — Granular unsubscribe groups (newsletter vs billing, etc.).
Developer interfaces
| Slug | Name | Kind | Version |
|---|---|---|---|
| event-webhooks | Event Webhook | other | — |
| inbound-parse | Inbound Parse Webhook | other | — |
| sdk-go | sendgrid-go | sdk | 3.x |
| sdk-java | sendgrid-java | sdk | 4.x |
| sdk-node | @sendgrid/mail | sdk | 8.x |
| sdk-php | sendgrid-php | sdk | 8.x |
| sdk-python | sendgrid-python | sdk | 6.x |
| sdk-ruby | sendgrid-ruby | sdk | 6.x |
| rest-api | SendGrid v3 API | rest | v3 |
| smtp | SMTP Relay | other | — |
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