Email

Bulk sender

A bulk sender, in Gmail's rules, is anyone who sends more than 5,000 messages a day to Gmail accounts.

Since February 2024, Gmail has stricter rules for bulk senders. They must set up SPF, DKIM and DMARC, offer one-click unsubscribe on marketing email, and keep their spam complaint rate below 0.3%.

Most founders are far below 5,000 a day. Follow the same rules anyway. Gmail asks every sender to set up SPF or DKIM, and the full set protects your email deliverability. If you send cold email, warm up a second domainsoon for it.

Go deeper

  • How to warm up an email domain for cold emailComing soon
  • How to grow a newsletter from scratchComing soon

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Last checked 24 September 2026.

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