Add this TXT record at your domain apex: v=spf1 include:zoho.com ~all (for global) or include:zoho.eu for EU users. This authorizes Zoho’s mail servers to send on your behalf. Combine with other providers via chained includes if needed: v=spf1 include:zoho.com include:_spf.google.com ~all. Verify SPF is passing with the email authentication checker after propagation. Zoho’s documentation confirms include:zoho.com is the correct value; older docs may reference deprecated hosts.
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How do I set up SPF for Zoho Mail?
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What Is an SPF Record?
SPF tells the world which servers are allowed to send email on behalf of your domain. A missing or misconfigured SPF record lets spammers forge your address — and sends your legitimate email straight to spam.