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. MailBlastr 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. MailBlastr’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.
MailBlastr 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.
MailBlastr 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 MailBlastr’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) needs no card — you can run the whole migration before paying anything.
Add your sending domain and follow the guided DKIM, SPF, and DMARC setup. One-click flows exist for Cloudflare, GoDaddy, and Namecheap; verification usually completes in minutes.
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.mailblastr.com/api/emails \
-H "Authorization: Bearer mb_xxxxxxxx" \
-H "Content-Type: application/json" \
-d '{
"domain": "acme.com",
"from": "Acme <hello@acme.com>",
"to": ["ada@example.com"],
"subject": "Welcome to Acme",
"html": "<p>You are in.</p>"
}'| Feature | MailBlastr | Loops |
|---|---|---|
| Free tier | 3,000 emails/month (100/day), 1,000 contacts, 1 domain — no card required | 1,000 contacts, 4,000 sends/mo |
| Entry paid plan | $14/mo — 50,000 emails, 2,500 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 | Included on every plan — 1,000 on Free, up to 250,000 on stock plans | 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 — $21/30 days | On request |
| INR billing for India | ✓ | ✗ |
Loops pricing and features summarized from public pricing pages, last checked 2026-08-02. MailBlastr figures come from the live plan catalog.
Want the row-by-row breakdown? See the full MailBlastr 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 MailBlastr’s volume-based plans (with contacts included) price well.
Loops — its Notion-style editor is the nicest writing experience in email today, honestly. MailBlastr’s block editor with AI assistance is strong and developers often prefer templates-as-code, but Loops wins pure writing feel.
MailBlastr 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; MailBlastr 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.