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Glossary

Bulk sender

A bulk sender, in Google's definition, is any sender that sends close to 5,000 messages or more to personal Gmail accounts within a 24-hour period.

Updated · By Otman Ounana · How we research

Why it matters when you send from your own Gmail

That is Google's wording.[1] Bulk senders face stricter rules, including one-click unsubscribe and low spam rates. The status is also sticky: senders who meet the criteria at least once are permanently considered bulk senders.[2] A person sending cold email from their own inbox is nowhere near this, and Honest Intros caps a mailbox at 50 a day. The reason to know the term is the other direction: the rules that apply to everyone are a useful floor, and the bulk rules show what Google considers good practice.

Example

A newsletter that mails 6,000 subscribers with Gmail addresses in one day is a bulk sender. A salesperson writing to 30 prospects is not.

What to do

Know where you stand: count how many messages you send to Gmail addresses in a day. If you are well under 5,000, the bulk rules do not apply to you, but the all-sender rules do.

Related terms

All terms are on the glossary.

Read next

  • The 5,000-a-day bulk sender ruleWho Google counts as a bulk sender, what counts toward 5,000, why it is permanent, and the arithmetic for someone sending cold email from their own mailbox.
  • One-click under 5,000 a dayGoogle's one-click unsubscribe rule starts above 5,000 messages a day. What still applies below that, what the law asks for, and why a one-click link is worth adding anyway.
  • Soft bounceA soft bounce is a temporary delivery failure, such as a full mailbox or a busy server, reported with a 4xx status code or as a delayed delivery.
  • Spam trapA spam trap is an email address that real people do not use, kept by a mailbox provider or a blocklist operator to catch senders who mail addresses they should not.

Sources

  1. Google, Email sender guidelines FAQ. “A bulk sender is any email sender that sends close to 5,000 messages or more to personal Gmail accounts within a 24-hour period.” Read on 1 October 2026.
  2. Google, Email sender guidelines FAQ. “Senders who meet the above criteria at least once are permanently considered bulk senders.” Read on 1 October 2026.