If you're looking to get alerted when 1 specific device comes online you could use the report below and set up an
email alert for it. Email alerts will only be sent if the linked report has a result and this report will only have a result if the asset was successfully scanned in the last 24 hours (and was thus online).
Replace the highlighted text with the exact name of the asset you want to be alerted for.
Instructions for adding this report to your Lansweeper installation can be found
here.
Select Top 1000000 tblAssets.AssetID,
tblAssets.AssetName,
tblAssets.Domain,
tsysAssetTypes.AssetTypename,
tsysAssetTypes.AssetTypeIcon10 As icon,
tblAssets.IPAddress,
tblAssets.Lastseen
From tblAssets
Inner Join tblAssetCustom On tblAssets.AssetID = tblAssetCustom.AssetID
Inner Join tsysAssetTypes On tsysAssetTypes.AssetType = tblAssets.Assettype
Where tblAssets.AssetName = '
Asset' And tblAssets.Lastseen > GetDate() - 1 And
tblAssetCustom.State = 1