1. Campaign analyzer: paste email HTML or a Google Docs link and get a deliverability score out of 100. 2. Spam trigger scan that lists risky phrases, excessive capitalization, link-heavy footers, and image-to-text ratio warnings. 3. Authentication checklist (SPF, DKIM, DMARC) that walks the user through each DNS record with copy-paste values for common hosts. 4. Inbox placement seed test: send the campaign to a provided seed list and report where it landed across Gmail, Outlook, and Yahoo. 5. Subject line and preview text preview across clients plus a spam-score estimate. 6. AI rewrite suggestions that keep the voice while removing trigger language. 7. Domain health dashboard tracking reputation signals like bounce rate and complaint rate from connected send data. 8. Blocklist checker for major DNS blocklists with a monitored status per domain. 9. Pre-send checklist the tool generates per campaign, saved to history. 10. Weekly digest email summarizing domain health changes.