New: tracking across ChatGPT, Claude, Gemini and Perplexity
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We're a small team and we read everything. Tell us what you need and we reply during Mexico business hours (UTC-6), usually the same day.

Email

Sales, support, press or privacy: hola@checkmark.to.

If you're writing about a technical problem, include your brand, the prompt you were analysing and roughly when it happened — that makes it far faster to fix.

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If you already have an account, sign in to Checkmark and write from the same address you signed up with.

Plan changes, cancellations and invoices are handled in Billing inside your account.

Press and partnerships

We share aggregate data on how AI assistants recommend brands across Latin America. Write to us and we'll take a look.

hola@checkmark.to