SendGrid is Twilio’s email platform — one of the oldest and largest, built for high-volume senders and enterprise deliverability programs.
SendGrid removed its permanent free plan; after 60 days you must pay. SendDart keeps a genuinely free tier — 3,000 emails/month, 100/day, unlimited stored contacts, one domain — with no card and no expiry, which is what side projects and pre-launch products actually need.
SendGrid splits transactional (Email API) and marketing (Marketing Campaigns) into two products with two price ladders. Every SendDart plan includes both: the REST API for product email plus campaigns, audiences, segments, automations, and A/B testing for marketing.
SendGrid tiers, contact-storage add-ons, and per-product pricing make forecasting hard. SendDart is one plan ladder priced by volume, with email credits that never expire for spikes.
Typed SDKs in 8 languages plus a CLI, copy-paste quickstarts, an MCP server for AI agents, and DNS records you add at your provider and verify in SendDart. SendGrid’s v3 API works, but its DX shows its age.
Every SendDart plan includes ticket support and Scale adds Slack support — no paid support add-on tiers.
At multi-million monthly volumes with dedicated IP pools, subuser hierarchies, SSO requirements, and a deliverability team on retainer, SendGrid (and the Twilio ecosystem around it) is built exactly for you. SendDart’s stock plans top out at 2.5M emails/month before Enterprise.
The free tier (3,000 emails/month, 100/day) needs no card — enough to verify the whole migration end to end before paying anything.
Add your sending domain, copy the DKIM, SPF, and DMARC records into your DNS provider, then click Verify in SendDart. Allow for DNS propagation before testing delivery.
Replace your current send with one HTTPS request or a typed SDK in 8 languages. Batch endpoints, idempotency keys, and scheduling are built in.
Subscribe a webhook to delivered, opened, clicked, bounced, complained, and unsubscribed events — every request is signed so you can verify the source.
Bring audiences over via CSV or the contacts API; templates port as plain HTML or rebuild in the block editor.
The send call, after the switch
curl -X POST https://www.senddart.com/api/emails \
-H "Authorization: Bearer mb_xxxxxxxx" \
-H "Content-Type: application/json" \
-d '{
"from": "Acme <hello@acme.com>",
"to": ["delivered@test.senddart.com"],
"subject": "Welcome to Acme",
"html": "<p>You are in.</p>"
}'The sending domain is taken from the address in from — there is no domain field on this endpoint. delivered@test.senddart.com is the test recipient that reports a delivered outcome without sending real mail.
| Feature | SendDart | SendGrid |
|---|---|---|
| Free tier | 3,000 emails/month (100/day), unlimited contacts, 1 domain — no card required | 60-day trial (100/day), then paid only |
| Entry paid plan | $14/mo — 50,000 emails, unlimited contacts, 10 domains | Essentials from $19.95/mo |
| 100k emails/month | $24/mo (Pro 100k) · $63/mo (Scale, 1000 domains) | Essentials/Pro tiers — up to $89.95/mo with dedicated IP |
| Extra volume | $0.90 per 1,000 emails — credits never expire | Tier upgrades; contact storage billed separately in Marketing Campaigns |
| Transactional + marketing in one | API sends, campaigns, automations, and audiences in every plan | Two products: Email API and Marketing Campaigns, priced separately |
| Contacts & audiences | Unlimited stored contacts on every plan | Contact storage priced separately (Marketing Campaigns) |
| Automations | Included — visual automations, 10,000 runs/month | In Marketing Campaigns (separate product) |
| A/B testing | ✓ | In Marketing Campaigns (separate product) |
| Inbound receiving | ✓ | Inbound Parse webhook |
| Event webhooks | Signed webhooks: delivered, opened, clicked, bounced, complained, unsubscribed | ✓ |
| Official SDKs | 8 languages + CLI | SDKs for major languages |
| Log retention | 30 days on every plan | Varies by plan (activity history limited) |
| Dedicated IP | Add-on on Scale — Custom quote | Pro plan and above |
| INR billing for India | ✓ | ✗ |
SendGrid pricing and features summarized from public pricing pages, last checked 2026-08-02. SendDart figures come from the live plan catalog.
Want the row-by-row breakdown? See the full SendDart vs SendGrid comparison.
No — SendGrid replaced its permanent free tier with a 60-day trial at 100 emails/day. SendDart’s free plan (3,000 emails/month, 100/day) has no expiry and needs no card.
SendDart’s entry paid plan covers 50,000 emails/month for less than SendGrid Essentials ($19.95/month), and includes marketing features SendGrid sells separately in Marketing Campaigns. At 100k emails you stay far below SendGrid Pro ($89.95/month) unless you need a dedicated IP, which SendDart offers as a Scale add-on.
Yes, built in: campaigns, audiences, segments, topics, A/B testing, polls, and visual automations ship with every plan — there is no second product to buy.
Stock plans go to 2.5M emails/month, with Enterprise above that. If you send tens of millions monthly with IP pools and subusers, SendGrid’s enterprise machinery is the safer fit — that is the honest boundary.
Verify your domain (guided DKIM/SPF/DMARC), swap the send call to POST /emails or a typed SDK, and re-point event webhooks. The event model (delivered, opened, clicked, bounced, complained, unsubscribed) maps directly.
Free tier with 3,000 emails a month — API, campaigns, automations, and webhooks included. No card required.