How many cold emails can I send per day?

There is no universal legal cap that says "37 emails." There are mailbox provider reputations. Google and Microsoft punish sudden volume, high bounces, and spam complaints. Practitioners who still have inboxes usually sit in a band like 30 to 50 new cold emails per inbox per day once the domain is warmed, and much lower at the start.

A domain you registered last week should not send like a five-year-old corporate mail server. Warm up for a couple of weeks with small, real-looking volume. Then raise slowly. A 0 to 200 jump on Monday is how you buy a spam folder.

Need more volume? Add inboxes and domains that you actually control, with SPF, DKIM, and DMARC set. Do not send 400 a day from founder@gmail.com. That mailbox is your identity, not a cannon.

Watch bounce rate (keep it low, under about 2 percent) and spam complaint rate (providers talk about staying under 0.1 to 0.3 percent). Those two numbers will take the inbox away faster than a slightly long subject line.

If you cannot operate that infrastructure, do not fake it with LinkedIn automation either. Pick a volume you can stand behind. LinkedIn will not absorb an email problem. It has its own caps.