Zoho Email Free SMTP Sending Limits
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Zoho Email's free version does allow sending via SMTP but it has some extreme limits. Fine for testing or as personal email but for a business will be challenging. Here are the unpublished limits as of 12 Nov 2025..
SMTP configuration in free plan and the SMTP limit is pretty conservative. You can send up to 50 emails per day, with a maximum of 10 emails per hour, and no more than 20 recipients per email.
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@scottalanmiller I guess you can't expect more than that for a free email service.
