Email Grammar Checker.

No. Merge fields such as {{first_name}}, {{company}} and {{first_name|there}} are set aside before any rule runs, so they are never flagged or rewritten, and no fix can overlap one. When a sentence's grammar depends on what a field fills in, as in “{{company}} are hiring”, the checker says so as a suggestion instead of calling it wrong.

An error is wrong in standard written English for the variant you chose, such as “could of” or “their is”, or something that would be sent broken, like a malformed merge field. A suggestion is correct either way but a common style choice, such as a comma before “but”. A tone note is a measured observation, such as two questions in one email, and is never presented as a mistake.

Yes. Each option in a group such as {Would you be|Are you} open is checked inside its own sentence, so a mistake that appears only in the second option is reported against that option. Broken spintax, such as a missing closing brace or an empty option, is reported as an error, because it would be sent with the braces showing.

Quoted text from earlier messages is never checked, because you didn't write it and shouldn't edit it. Your signature is skipped by default, since names, job titles and company names trip spelling rules; switch on Check Signature to include it. The sign-off line itself, such as “Best regards”, is always checked.

Yes, the email grammar checker is free to use. Paste a subject and body, press Check, and you get every error, suggestion and tone note with its reason and fix, plus the corrected text to copy. Nothing is installed, and nothing in your email changes until you accept a fix.

The AI only suggests a rewrite for a sentence the checker has already flagged for tone, such as a very long sentence, passive voice or an opener about yourself. Each rewrite is checked before you see it: it must keep every merge field, spintax group and link, add no new numbers or names, and pass the grammar rules. You accept or ignore it like any other fix.

It shows tone signals it can measure exactly: hedging words, apologetic or self-focused openers, passive voice, sentence length, how many questions you ask, exclamation marks, and how often you say “you” against “I” or “we”. It doesn't give a tone score or a label such as “friendly”, because no method produces one that is reliably correct.

English with US, UK, Canadian, Australian, New Zealand and South African spelling, plus more than twenty other languages including French, German, Spanish, Portuguese, Italian and Dutch, chosen by you or detected automatically. Grammar and spelling work in every listed language; tone notes and AI rewrites are for English only.

Spelling rules use a dictionary, and most names and brand words aren't in it. The checker marks a capitalised word it doesn't know as a suggestion rather than an error, and Add To My Words stops it being flagged again in this browser. Your word list is sent with each check and kept only in your browser.

Each check is stored with its result, your IP address and browser type, and the text and result are cleared after 90 days, as our privacy policy describes. The grammar engine runs on SendCanyon's own servers. When the AI suggests a rewrite, only the flagged sentences go to SpirenAI, SendCanyon's AI.