external_check
Recipients outside your accepted domains
Per-tenant accepted-domain list. Any outbound email with a recipient outside that list surfaces a warning at send time, with one-click confirm or override-with-justification.
features
Eleven outbound checks. One Outlook add-in.
Every check runs in parallel at compose-time, returns clean / warn / block, and is independently licensable per tenant. Ten are free for teams under 25. The AI grammar module is a metered add-on, billed per check.
domain_typo_check
Typosquatted domains (gmial.com → gmail.com)
Levenshtein-distance matching against a domain reputation list. Catches the wrong-letter and homoglyph mistakes that bypass the human eye and the spell-checker.
mixed_domains
Multiple external domains in one message
Flags emails where two or more unrelated external domains share the To/Cc lines — a strong indicator of an accidental cross-customer leak.
consumer_vs_corporate
Consumer addresses in corporate context
Gmail, Yahoo, Outlook.com and other consumer providers detected when the message is otherwise corporate. Surfaces the "I sent it to my personal account by mistake" pattern.
attachments_confirm
Missing or oversized attachments
Keyword cues ("see attached", "report inside") combined with AI intent analysis to catch the empty-promise email. Also flags files that exceed your tenant size policy.
pii_scan
PII and secrets in the body or attachments
Eight built-in patterns: SSN, credit card, AWS keys, private keys, API keys, passwords, email addresses, phone numbers. Custom regex patterns supported per-tenant. ReDoS-protected with safe-regex2.
grammar_spell
ai · meteredAI grammar and spelling, on every send
AI-powered proofreading that catches typos, broken punctuation, and awkward phrasing — and respects valid-pattern exceptions (legal jargon, brand names) you configure. Confidential by design: no training on your data, no logging of email contents. Metered AI add-on, charged per check.
reply_all_protection
Reply-all to many recipients
Threshold-based warning when a reply-all reaches a configurable number of recipients. Stops the "30 people just got my Friday rant" moment.
bcc_protection
BCC privacy when To/Cc gets long
Detects external newsletter or announcement patterns where recipients should be moved to BCC for privacy and suggests the correction inline.
vip_alert
VIP recipient alerts
Tenant-defined VIP list (executives, board, key customers). Sender gets an inline reminder that the recipient is a VIP before send — including tone hints when paired with grammar_spell.
modules run in parallel · per-module timeout · fail-open on errors
Try it on a real inbox.
Free forever for teams under 25. Install the Outlook add-in, configure the modules you want active, and start protecting every outbound email.