EMAIL HEALTH CHECK // ONE PASS
Email Health Check: Auth, Blacklists, Reputation, and Placement in One Pass
Checking deliverability piecemeal means four tools and no verdict. An email health check runs authentication, blacklist status, reputation, and live placement as one pass and returns a single prioritized answer, even when that answer is "you are fine."
Inbox placement
96%
··%
· ·
Authentication
checking 130+ blacklists
Sample data. Seed results are estimates, not guarantees.
What is a email health check?
An email health check is a single pass over everything that decides whether your mail reaches people: authentication, blacklist status, sender reputation, and actual inbox placement. Inboxes runs all four together: SPF, DKIM, and DMARC parsed from real message headers, your domain and IPs screened against 130+ blacklists, reputation trends pulled onto one timeline, and a live placement test across 27+ seed mailboxes at 6 providers, with results in minutes and fixes ranked by impact. Sometimes the honest verdict is that you are already healthy: auth passing, no listings, solid inbox rates, nothing to fix beyond leaving monitoring on. And because seed panels are directional estimates, no health check can promise the inbox; this one exists to keep legitimate senders healthy, not to launder anyone's spam.
What you get
Email health check, done properly
Four checks, one verdict
Auth, blacklists, reputation, and placement are interdependent; running them together turns four partial reports into one prioritized diagnosis.
Transactional mail included
Password resets and receipts fail differently than newsletters. The txn scenario checks the stream where a spam-foldered email is a support ticket.
"Already healthy" is a real result
If the board is green, the report says so and stops. No invented urgency, no red badge engineered to upsell you a remediation you do not need.
A repeatable baseline
Run the same pass monthly or before every major send; the stored history shows drift the day it starts, not the quarter after.
How it works
From send to fix list in four steps
Kick off the full pass
One button queues auth parsing, the 130+ blacklist sweep, reputation pull, and a live seed test.
Send the probe email
Fire a real message from your ESP to the seed list, transactional template included.
Get the graded report
Each area scores green, amber, or red, with the evidence and the ranked fixes attached.
Schedule the habit
Recurring health checks plus continuous monitoring keep the baseline honest between sends.
The honest boundary: seed results are directional estimates and nobody can guarantee inbox placement. Inboxes finds the fixable causes, tells you exactly what to change, and monitors the result. No warmup networks, no bot opens, ever. Full detail on the methodology page.