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Email Deliverability Calculator
21% of legitimate emails never reach the inbox. If your bounce rate is above 2%, you're probably one of them. Let's calculate what bad list hygiene is costing you.
$36
average ROI per $1 spent on email
21%
of emails never reach the inbox
45%
of all email is spam (your legit emails compete)
6 months
to fully recover damaged sender reputation
Your Email Program
Total sends (list × frequency)
Revenue from email-driven action
Current Performance
With Clean List (2% bounce)
Annual revenue you're leaving on the table
$14,700
Email Health Benchmarks
| Metric | Good | Warning | Critical |
|---|---|---|---|
| Bounce Rate High bounces signal bad list hygiene. ISPs throttle or block you. | < 2% | 2-5% | > 5% |
| Spam Complaint Rate Complaints destroy sender reputation. Hard to recover. | < 0.1% | 0.1-0.3% | > 0.3% |
| Open Rate Low engagement tells ISPs your emails aren't wanted. | > 25% | 15-25% | < 15% |
| Unsubscribe Rate High unsubs indicate targeting or frequency problems. | < 0.5% | 0.5-1% | > 1% |
Sender Reputation & Inbox Placement
Check your sender reputation at senderscore.org or Google Postmaster Tools
How to Fix Deliverability Problems
High Bounce Rate
Outdated or purchased lists with invalid emails
- → Verify all emails before sending
- → Remove hard bounces immediately
- → Use double opt-in for new subscribers
- → Clean list every 3-6 months
Spam Complaints
Sending to people who don't want your emails
- → Only email people who opted in
- → Make unsubscribe obvious and easy
- → Set expectations at signup
- → Segment and personalize content
Low Open Rates
Poor subject lines, wrong timing, or landing in spam
- → Test subject lines (questions work)
- → Optimize send times for your audience
- → Authenticate with SPF/DKIM/DMARC
- → Warm up new domains before volume
Domain Blacklisted
Previous spam complaints, hacked account, or purchased list
- → Check blacklist status (MXToolbox)
- → Request removal from each blacklist
- → Fix underlying issue first
- → Consider new sending domain
Stop wasting emails on bad data
The Prospector verifies every email before you send. No more bounces, no more reputation damage.