Loops is "email for SaaS" — marketing, product, and transactional email behind a Notion-style editor, priced by contact count with unlimited sends.
On Loops, crossing 5,000 contacts costs $49/month and 10,000 costs $99 — regardless of how little you send. SendDart prices primarily by volume with generous contact allowances (2,500 on the entry plan, up to 250,000 on stock tiers), so a growing list doesn’t multiply your bill.
Loops’ API covers contacts, events, and transactional sends. SendDart’s REST surface spans emails, campaigns, automations, audiences, segments, topics, templates, domains, webhooks, polls, and API-key scoping — with 8 typed SDKs, a CLI, and an MCP server.
SendDart plans include 10 domains on Pro and up to 1,000 on Scale, each with isolated reputation — agencies and multi-product teams need this. Loops workspaces center on a single brand.
SendDart includes A/B campaign testing, in-email polls, and inbound receiving — surface area Loops does not aim to cover.
Both free tiers allow about the same contacts, but SendDart’s paid ladder starts at a fraction of $49 — useful the day you outgrow free.
If your team lives in the editor, your list fits a low bracket, and "every feature, unlimited sends, one price" simplicity is worth more than API depth, Loops is a delightful product — its editor remains the best in class.
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 | Loops |
|---|---|---|
| Free tier | 3,000 emails/month (100/day), unlimited contacts, 1 domain — no card required | 1,000 contacts, 4,000 sends/mo |
| Entry paid plan | $14/mo — 50,000 emails, unlimited contacts, 10 domains | $49/mo — 5,000 contacts, unlimited sends |
| 100k emails/month | $24/mo (Pro 100k) · $63/mo (Scale, 1000 domains) | Priced by contacts, not volume ($99/mo at 10k contacts) |
| Extra volume | $0.90 per 1,000 emails — credits never expire | Move up a contact bracket |
| Transactional + marketing in one | API sends, campaigns, automations, and audiences in every plan | Marketing + product + transactional (SaaS focus) |
| Contacts & audiences | Unlimited stored contacts on every plan | The pricing axis — brackets from 1,000 free |
| Automations | Included — visual automations, 10,000 runs/month | Loops (journey) builder included |
| A/B testing | ✓ | ✗ |
| Inbound receiving | ✓ | ✗ |
| Event webhooks | Signed webhooks: delivered, opened, clicked, bounced, complained, unsubscribed | ✓ |
| Official SDKs | 8 languages + CLI | JS-first SDKs |
| Log retention | 30 days on every plan | Varies |
| Dedicated IP | Add-on on Scale — Custom quote | On request |
| INR billing for India | ✓ | ✗ |
Loops 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 Loops comparison.
If your list is small and you send very often, yes. Most SaaS teams have the opposite shape: volume grows with product usage while the engaged list stays focused, which is exactly what SendDart’s volume-based plans (with contacts included) price well.
Loops — its Notion-style editor is the nicest writing experience in email today, honestly. SendDart’s block editor with AI assistance is strong and developers often prefer templates-as-code, but Loops wins pure writing feel.
SendDart by a distance: full REST coverage of campaigns, automations, audiences, segments, domains, webhooks, templates, and polls with 8 typed SDKs and a CLI. Loops’ API focuses on contacts, events, and transactional sends.
Loops centers a workspace on one brand; SendDart includes 10 domains on Pro and up to 1,000 on Scale with per-domain reputation isolation — built for agencies and multi-product teams.
Export contacts, re-create journeys in the visual automation builder, port templates as HTML (or rebuild in blocks), verify your domain, and swap transactional calls to POST /emails or an SDK.
Free tier with 3,000 emails a month — API, campaigns, automations, and webhooks included. No card required.