Safe Daily Sending Limits for Cold Email by Domain Age

Quoted on this wiki

Every place a page here uses this source, in the order the words come in it.

1. What "engagement" actually means here: “For cold email, engagement is mostly about replies and non-bounces.” Signs you're sending too much too soon:

   In Engagement-based deliverability

2. Recommended daily sending limits by domain stage: “New domain (weeks 1 to 2): 10 to 30 emails per day. No exceptions.” Warming domain (weeks 3 to 6): 30 to 75 emails per day. Increase only if your engagement looks healthy (more on that below).

   In Mailbox sending capacity

3. Recommended daily sending limits by domain stage: “New domains have zero reputation history, and mailbox providers are watching closely.” Warming domain (weeks 3 to 6): 30 to 75 emails per day. Increase only if your engagement looks healthy (more on that below).

   In Mailbox sending capacity

4. A lot of cold emailers ask "how many emails can I send per day?" when the real question is "how many can I send without burning my domain?" Those are very different numbers. “Build it slowly and you can scale.” Recommended daily sending limits by domain stage:

   In Mailbox sending capacity

5. A lot of cold emailers ask "how many emails can I send per day?" when the real question is "how many can I send without burning my domain?" Those are very different numbers. “Rush it and you'll spend weeks recovering.” Recommended daily sending limits by domain stage:

   In Mailbox sending capacity

6. Signs you're sending too much too soon: “Rate-limiting errors from your sending provider” Emails landing in spam that previously hit the inbox

   In Sending rate and volume controls

7. What "engagement" actually means here: “Any spam complaints at all should make you pause and reassess your list quality.” Signs you're sending too much too soon:

   In Spam complaint management