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SendLayer API rate limits are applied to the API key used to make the request.

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Email Sending

SendLayer API limit usage varies depending on your account plan. Below are the available plans and their respective limits.
SendLayer PlanEmails/minuteEmails/hourEmails/day
Trial102550
Starter50300500
Business1205001000
Growth20010002500
See our detailed guide to learn more about SendLayer rate limits

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Email Recipients

When sending emails to multiple recipients, the following limits apply to all users regardless of account type.
  • Send To: 10 email addresses
  • CC: 10 email addresses
  • BCC: 5 email addresses

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Email Size

When sending an email, the maximum file size per email is 10 MB. This includes both the content and additional email attachments.