# Centimailer

> Centimailer is a high-deliverability email platform and campaign workspace designed for cold outreach, B2B lead generation, and opt-in audience newsletters.

## Overview
Centimailer enables founders, growth agencies, and marketing teams to dispatch personalized email campaigns at scale. Senders can be added and used immediately with zero verification delays. The platform includes full audience segmentation, CSV lead imports, variable personalization, live sandboxed email previewing, background queue throttling, and real-time open tracking analytics.

## Core Capabilities
- **Cold Outreach & Opt-in Campaigns**: Send targeted outbound cold emails or newsletters to opted-in subscribers with unified suppression management.
- **Instant Sender Identities**: Configure sender names and from-addresses without verification roadblocks.
- **Audience Management**: Group leads into lists, import CSV or TXT files up to 10,000 rows per batch, and map custom metadata.
- **Merge Tags & Personalization**: Dynamically substitute `{{first_name}}`, `{{last_name}}`, `{{name}}`, `{{email}}`, and custom recipient attributes.
- **Queue Throttling & Deliverability**: Background queue worker disperses sends incrementally to protect IP reputation and maintain high inbox placement.
- **Analytics & Open Tracking**: Track seen emails, accepted provider dispatches, bounces, and real-time open rates.
- **Transparent Prepaid Billing**: Account balance deposit system funded through cryptocurrency and online payments with clear sending tiers.

## REST API Endpoints
Base URL: `/wp-json/centimailer/v1`

### Authentication
- `POST /auth/login` — Authenticate workspace user
- `POST /auth/register` — Create new workspace tenant
- `POST /auth/logout` — Terminate session
- `POST /auth/forgot` — Request password reset
- `POST /auth/reset` — Complete password reset

### Workspace & Campaigns
- `GET /overview` — High-level workspace statistics (emails sent, seen emails, active senders, 7-day activity chart)
- `POST /send` — Dispatch or queue an email campaign with idempotency protection
- `GET /logs` — Campaign logs with pagination and event breakdown
- `GET /campaigns/{id}/events` — Detailed recipient delivery and open events
- `GET /metrics` — Aggregated workspace analytics

### Audiences & Senders
- `GET /senders` — List configured sender identities
- `POST /senders` — Create instant sender identity (automatically active)
- `PUT /senders/{id}` — Update sender identity
- `DELETE /senders/{id}` — Delete sender identity
- `GET /lists` — List all audience groups with total contact counts
- `POST /lists` — Create a new audience list
- `GET /lists/{id}/contacts` — Paginated contacts in an audience list
- `POST /contacts/upload` — Bulk CSV/TXT contact import

### Billing & Support
- `GET /billing` — Usage limits, monthly sending quota, account balance, and recent deposits
- `POST /billing/deposit` — Create account balance deposit invoice
- `GET /tickets` — User support tickets
- `POST /tickets` — Open new support ticket
- `POST /tickets/{id}/reply` — Post reply to support conversation

## Pricing Tiers
- **Free Tier**: $0/month — 3,000 emails/30d, 100 daily limit, 100/send, 2 senders, no tracking, custom domains only, 10 MB CSV (up to 1,000 contacts), 2 audience lists, 2 MB attachments.
- **Starter Tier**: $5/month — 8,000 emails/30d, 500 daily limit, 250/send, 3 senders, tracking included, custom domains only, 25 MB CSV (up to 5,000 contacts), 5 audience lists, 5 MB attachments.
- **Growth Tier**: $9/month — 20,000 emails/30d, 1,000 daily limit, 1,000/send, 5 senders, tracking included, custom domains only, 50 MB CSV (up to 20,000 contacts), 10 audience lists, 10 MB attachments.
- **Pro Tier**: $25/month — 60,000 emails/30d, no daily cap, 2,500/send, 15 senders, tracking included, free email providers allowed (Gmail/Yahoo), 100 MB CSV (up to 50,000 contacts), 25 audience lists, 20 MB attachments.
- **Agency Tier**: $60/month — 200,000 emails/30d, no daily cap, 10,000/send, unlimited senders, tracking included, free email providers allowed (Gmail/Yahoo), 250 MB CSV (up to 200,000 contacts), 50 audience lists, 25 MB attachments.

## Links & Resources
- Home: https://centimailer.com/
- Pricing: https://centimailer.com/pricing/
- Contact & Support: https://centimailer.com/contact/
- Terms of Service: https://centimailer.com/terms-of-service/
- Privacy Policy: https://centimailer.com/privacy-policy/
- Acceptable Use Policy: https://centimailer.com/acceptable-use/
- Refund Policy: https://centimailer.com/refund-policy/
- XML Sitemap: https://centimailer.com/sitemap.xml
- LLMs Reference: https://centimailer.com/llms.txt