How many warmup emails should I send per day?

There’s no one-size-fits-all. Your ideal warmup volume depends on:

• Your email provider (ESP)

• The type of account (Microsoft, Google, custom domain)

• Your current cold sending volume

Here are our general guidelines:

For Microsoft:

• 2–4 cold emails/day

• 2–4 warmup emails/day

• Max 3 warmup replies (settable in Bison settings)

For Google:

• Use a 1.5:1 ratio of warmup to cold emails

Sending too many warmups can cause bounces and lower your score, so always balance based on your account type and usage.