How warm-up works
- LinkedIn senders start at level 0: 4 invitations, 5 messages and 10 profile views a day.
- Mailboxes start at level 3.
- A sender moves up one level after 14 days in a row at health 85 or above.
- Accounts with fewer than 150 connections, or an unknown count, stay at level 0 for at least 28 days.
- Free LinkedIn accounts can’t go above level 1.
- Level 5, the highest, allows 45 invitations and 60 messages a day.
Best practices
- Connect early. The warm-up clock starts when the sender connects, so connect accounts before you need them.
- Keep the account active by hand too. Accounts that post, comment and accept invitations normally look more natural.
- Write invitations people accept. A low acceptance rate lowers the health score. Target the right audience and keep the first touch personal, with no pitch.
- Don’t start with a big burst. Sending a lot after days of silence lowers the Consistency score. Let the platform ramp volume up.
- Keep working hours realistic. Use normal weekday hours in the sender’s real timezone. See Sender’s Schedule Explained.
- Keep the proxy in the owner’s country. Changing it often, or to the wrong country, hurts account health.
- Deal with checkpoints quickly. If LinkedIn asks for a verification code, enter it on the sender page. Repeated checkpoints lower the Verification score.