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Integration questions, billing, or a security report — tell us what you need and we will get back to you by email.

Integration questions
Most answers are in the guides and the API reference. Include your issueId when asking about a specific send.
Open the docs
Billing and credits
Credit purchases, invoices, and refunds. Please include the email address of your console account.
Email · support@k-otp.dev
Security reports
Found a vulnerability? Email us directly and do not include real phone numbers or codes in the report.
Email · support@k-otp.dev
Company
Company
1990Company
CEO
Jungrae Kim
Business registration no.
163-31-01584
Address
601, 7, Cheonjung 1-gil, Dongnam-gu, Cheonan-si, Chungcheongnam-do, South Korea
Phone
+82-2-877-1990

Integration questions