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Concepts

A short tour of the primitives the API exposes. If you’ve worked with AWS SES the names map 1:1 — sending identities, configuration sets, suppression lists, all here.

The 5 primitives

┌─────────────────────────────────────────────────────────┐
│              Your Splashify Pro account                 │
│                                                         │
│  ┌───────────────┐  ┌───────────────┐  ┌─────────────┐ │
│  │   Identity    │  │  Identity     │  │  Identity   │ │
│  │ (your domain) │  │  (alt addr)   │  │  (3rd domain)│ │
│  └───────┬───────┘  └───────┬───────┘  └──────┬──────┘ │
│          │ verified         │ verified        │ pending │
│  ┌───────┴──────────────────┴─────────────────┴──────┐ │
│  │              Configuration Sets                    │ │
│  │   ┌──────────────┐  ┌──────────────┐               │ │
│  │   │ "production" │  │ "marketing"  │               │ │
│  │   │  ↓ events     │  │  ↓ events    │               │ │
│  │   │  → webhook A  │  │  → webhook B │               │ │
│  │   │  → webhook B  │  │              │               │ │
│  │   └──────────────┘  └──────────────┘               │ │
│  └────────────────────────────────────────────────────┘ │
│  ┌────────────────────────────────────────────────────┐ │
│  │           Suppression list (account-wide)           │ │
│  │  bounced@example.com    angry@example.com  ...      │ │
│  └────────────────────────────────────────────────────┘ │
│                                                         │
│  Wallet: ₹X.XX                       Sandbox: ON / OFF  │
└─────────────────────────────────────────────────────────┘
  1. Sending identities — verified domains + email addresses you can send From:.
  2. Configuration sets — logical groupings of sends that route events to webhook destinations.
  3. Suppression list — account-wide blocklist. Auto-populated by hard bounces + complaints + unsubscribes.
  4. Reputation — your account’s bounce + complaint rate. Drives auto-pausing if thresholds breach.
  5. Sandbox vs production — sandbox = 200/day cap + verified-only recipients. Production = real volume after a quick review.

Hierarchy

  • Identity is account-wide. Verifying acme.com lets you send from any address at acme.com.
  • Configuration set scopes sends — events from sends inside a config set go to that set’s webhook destinations.
  • Suppression list is account-wide by default. Each config set can opt to also suppress per-config-set on bounces / complaints via suppression_options.

Send-time flow

POST /send (with config_set + from + to)
     │
     ▼
1. From-domain on a verified identity? ──── no → 400 FROM_NOT_VERIFIED
     │ yes
     ▼
2. Recipient on suppression list? ──── yes → status=rejected
     │ no
     ▼
3. Wallet balance >= ₹0.01? ──── no → 402 INSUFFICIENT_BALANCE
     │ yes (or in sandbox free tier)
     ▼
4. Daily quota not exceeded? ──── no → 429 SANDBOX_QUOTA_REACHED
     │ yes
     ▼
5. Queue the email for delivery
     │
     ▼
6. Fire "Send" event → webhook destinations
     │
     ▼
7. SMTP attempt → recipient MX
     ├── 250 OK → "Delivery" event
     ├── 5xx hard bounce → "Bounce" event + suppress
     └── 4xx soft bounce → retry (5min, 30min, 2h)
IntroductionSending Identities