This article explains mailbox warm-ups (also known as warm-up slots) and the daily warm-up limits.
Every plan provides you with warm-up slots to warm up your email accounts. During the warm-up, your email accounts can send a certain number of emails per day.
Warm-up slots
Your warm-up slots depend on your plan. On Pro plans, you get the unlimited warm-up slots. The number of warm-up slots means how many email accounts you can warm up at the same time.
Warm-up limits
The daily warm-up limit is how many emails your account can send per day during a warm-up campaign.
Each email account in the warm-up has its own limit. For example, with the Pro S plan, you can warm up unlimited mailboxes, each sending up to 100 emails per day.
The table below shows how many email accounts you can warm up at the same time and their daily warm-up limits.
| Plan | Trial | Starter | Pro S | Pro M | Pro L | Ultra |
| Warm-up slots | 1 | 3 | unlimited* | unlimited* | unlimited* | unlimited* |
| Daily warm-up limit (per email account) | 15 | 50 | 100 | 200 | 500 | 1000 |
Note that the use of the Email Warm-up feature is subject to fair usage restrictions:
⇒ If over 50% of your connected accounts use email providers other than Gmail (including Google Workspace) and Microsoft (including Microsoft 365), active warm-up slots may be lowered from unlimited to 500 (for Pro S and Pro M plan users) or 1,000 (for Pro L and Ultra plan users).
This keeps performance optimal for everyone using Email Warm-up.
Have more questions? We’re here to help at help@snov.io or live-support chat.
Sorry about that 😢
How can we improve it?