To enable the warmup functionality:
Go to your Email Accounts section and click on the flame icon on the right-hand side for each email account or
or Through Account Settings
If the flame icon is grey it is not yet enabled. When you click it, it will turn green which means that it is enabled
FAQ
Q: How to change the warmup settings?
A: You can change the warmup settings of each email account by clicking on the ‘Settings’ icon.
The warmup settings are already pre-filled with the suggested amounts. If you’d like to change them click in the field and change the number for Increase per day, Daily limit, and the Reply rate %. And don’t forget to click the blue ‘Save’ button once you’re done.
Below the ‘Increase per day’ field you also have the option to Disable slow warmup. This option we only recommend for older email accounts that are already warmed up. Don’t use this for new accounts. Newer accounts should be warmed up slowly and gradually (something Instantly automatically takes care of for you when you enable Warmup).
For the email accounts that have just been connected, warmup will start sending emails after 12 am UTC.