Set up DMARC and see who's sending email using your brand's domain.
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Does Postmark have a daily send limit?

No. We monitor for spam and bounces regularly but not based on a daily send limit.
You will always be able to send as many emails you need using Postmark as long as it meets the following qualifications:
  • Transactional Message Streams only have transactional messages sent through them:
  • Broadcast (bulk) email is sent through Broadcast Message Streams.
  • Your spam complaint rate is lower than 1 in 1,000 emails (0.1%).
  • Your bounce rate is lower than 10% of all emails sent.
    • All bounce events highlighted in red in your activity/stats pages count towards your bounce rate, except for (Bounces to blackhole addresses, bounces in your Sandbox server, and SMTP API Error events).
  • You’re in full compliance with our Terms of Service
Accounts that do not meet the qualifications above will be contacted (via email) and the account will be paused, with messages queued, until a solution is in place to resolve the problem.
If you have any questions about this, feel free to contact our Success team
Last updated June 7th, 2022

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