What it does

The free NMR Email Log for CF7 logs every Contact Form 7 email delivery attempt and shows you what went wrong when delivery fails. The Pro version adds four transactional email providers (Resend, Mailgun, Brevo, Postmark), per-form routing so different forms can use different providers, automatic fallback to a second provider when the first fails, unlimited failure alerts by email and webhook, auto-retry 15 minutes after a failure, and per-form delivery rate statistics.

What you get with Pro

Routing & delivery

Four providers — Resend, Mailgun, Brevo, Postmark
Per-form routing — each form can use a different provider
Fallback provider — automatic retry through a second provider on failure
Global provider — one setting applies to all forms by default

Alerts & monitoring

Unlimited failure alerts by email (free plan: 10/month)
Webhook notifications on every delivery failure — works with Slack, Make, Zapier, n8n
Per-form delivery statistics — sent, failed, and retried counts for every form
DNS check — validates SPF and DMARC records for your sending domain

Recovery & integrations

Auto-retry — re-sends failed emails automatically 15 minutes later
Unlimited manual retries (free plan: 25/month)
Flamingo integration — delivery status column in the Flamingo inbound messages list
License activation — per-site license managed from the settings panel

Example: per-form routing with fallback

Route different forms through different providers. If the primary provider fails, a fallback provider retries automatically — no manual action needed.

Contact Form     → Resend        (global provider)
Quote Request    → Mailgun       (per-form override)
Newsletter       → Brevo         (per-form override)

On failure:      → Postmark      (fallback, automatic)
After 15 min:    → auto-retry    (if fallback also fails)

Webhook on failure: every failed delivery fires a JSON POST to your endpoint — compatible with Slack incoming webhooks, Make, Zapier, and n8n.

{
  "event":     "cf7_mail_failed",
  "form":      "Contact Form 1",
  "form_id":   42,
  "error":     "Host or port unreachable...",
  "site":      "My Site",
  "site_url":  "https://example.com",
  "timestamp": "2026-06-07T14:30:00+02:00"
}

Free vs Pro

Feature	Free	Pro
Delivery log — all CF7 forms	✓	✓
CF7 config scanner	✓	✓
Failure diagnosis (human-readable errors)	✓	✓
Test send button	✓	✓
Resend routing (all forms, 1 provider)	✓	✓
Failure alerts — email only	10/month	unlimited
Manual retries	25/month	unlimited
Multiple providers: Mailgun, Brevo, Postmark, Resend	—	✓
Per-form provider routing	—	✓
Fallback provider on failure	—	✓
Failure alerts — webhook / Slack	—	✓
Auto-retry 15 min after failure	—	✓
Per-form delivery rate statistics	—	✓
Flamingo delivery status column	—	✓
DNS check — SPF & DMARC	—	✓

Requirements

WordPress 5.7 or later
Contact Form 7 (any recent version)
NMR Email Log for CF7 (free plugin, must be active)
API key from at least one transactional provider — Resend free tier: 3,000 emails/month, no credit card needed

Get NMR Email Log for CF7 Pro

NMR Email Log for CF7 Pro

€24.90 one-time

One-time purchase. Includes updates and support. License activated per site.

Questions? Use the contact form or check the free plugin support forum for general usage questions.