What this can and cannot tell you
Deliverability has two halves. This tool covers one of them completely and cannot see the other at all.
What it checks
- Phrases filters have learned to distrust, in subject, preheader and body
- A missing or boilerplate preheader
- Shouting, stacked exclamation marks, price spam
- Link-to-text ratio and thin, link-led bodies
- Missing unsubscribe wording
What it cannot see
- Your SPF, DKIM and DMARC records
- Your sending domain's reputation
- How stale or how bought your list is
- Past complaint and bounce rates
A clean scan here means the email is not the problem. If mail still lands in spam after that, the cause is on the right-hand list, and your sending platform is where to look next.
If you promote other people's launches
Affiliate promos are where deliverability goes wrong.
Borrowed sales-page copy carries the vendor's hype straight into your inbox reputation. BonusPlane takes the launch page URL and your affiliate link, builds the bonus page and the delivery page, and writes the promo series that sends your list there. Every claim it makes is listed with the page field it came from, so you can check it rather than trust it, and every subject line is scored before you see it.
Included with Founder membership
Now score the subject line
Arriving is half the job. The Subject Line Scorer grades the line that decides whether the email gets opened, shows the subject and preheader as the inbox row actually renders them on phone and desktop, and rewrites the line in whichever angle you pick. Also free, also in your browser.