How to Set Up CTMailer for Transactional and Marketing Emails

CTMailer Integrations: Connect SMTP, APIs, and Analytics Quickly

Overview

CTMailer supports three primary integration layers so you can send, track, and analyze email from apps, services, or marketing workflows: SMTP relay, REST APIs (transactional & template endpoints), and analytics/webhooks for deliverability and engagement data.

Quick integration options

• SMTP relay
  • Use standard ports (25, 465, 587/STARTTLS).
  • Authenticate with credentials or API key via SMTP AUTH (PLAIN/LOGIN).
  • Suitable for legacy apps, CMSs, or libraries that expect an SMTP server.
• REST API
  • JSON endpoints for sending messages, templates, personalization, attachments, and batch sends.
  • Better for dynamic content, lower latency, and programmatic control (rate limits and SDKs available).
• Webhooks & analytics
  • Real-time webhooks for bounces, deliveries, opens, clicks, complaints, and unsubscribes.
  • Dashboard analytics with deliverability metrics, bounce reasons, engagement rates, and per-domain/inbox-provider breakdowns.

Typical integration flow (prescriptive)

1. Verify sending domain and add SPF/DKIM (CTMailer provides DNS records).
2. Choose integration:
   • If your app uses SMTP clients -> configure SMTP server, port, credentials.
   • If you need templating, personalization, or high-volume control -> use REST API + SDK.
3. Implement event/webhook endpoint and subscribe to bounce/delivery/open events.
4. Enable DKIM, SPF, and DMARC; monitor reputation and warm IPs if using dedicated IPs.
5. Use analytics dashboard and export/webhook data for downstream BI or product telemetry.

Best practices

• Authentication: prefer API keys over username/password where supported.
• Security: enforce TLS (STARTTLS or implicit TLS on 465).
• Deliverability: set up SPF/DKIM, monitor bounces, and gradually ramp sending (IP warm-up).
• Tracking: use webhooks for critical events; use dashboard reports for trend analysis.
• Retry logic: implement exponential backoff for transient SMTP/API failures.
• Template testing: preview and send test messages from staging before production.

Integrations & tooling suggestions

• Use official SDKs (Node/Python/Ruby/Go/Java/.NET) when available.
• Connect analytics to BI tools via CSV export or direct webhook ingestion to Kafka/BigQuery/Redshift.
• Integrate with common platforms: CRMs, e-commerce (order confirmations), and auth systems (password resets) via SMTP or API.

Minimal example (SMTP config)

• Host: smtp.ctmailer.example
• Ports: 587 (STARTTLS) or 465 (TLS)
• Auth: username = api_user, password = API_KEY
• From: use a verified sending domain with proper SPF/DKIM

If you want, I can generate a sample REST API request, SMTP code snippet for a specific language, or a webhook handler template for your stack.