Your mailbox moves to a separate warm-up pool and exchanges warm-up emails only with other mailboxes that also have the identifier turned off. Warm-up emails your mailbox sends and receives no longer include lemwarmup in the subject line.

lemwarm inserts a unique word, lemwarmup, in the subject line of each warm-up email. This makes warm-up emails easy to spot in your inbox and lets you filter them by subject.

You control it with the lemwarm identifier in mail title toggle in Other settings.

For optimal deliverability during warm-up, lemwarm recommends turning the identifier off. This removes the visible footprint and lets lemwarm run in the background. Warm-up emails are automatically deleted within 3 days.

No. Your warm-up emails do not include lemwarmup in the subject line, so a filter or rule based on lemwarmup does not match them. Warm-up emails stay in your inbox next to your other emails.

If you want to filter warm-up emails out of your inbox, turn the identifier back on and set up a filter. See Filter lemwarm emails in Gmail and Microsoft.

Your mailbox has the identifier turned off. Mailboxes with the identifier off exchange warm-up emails only with each other, so every warm-up email they receive has no lemwarmup in the subject line.

If your identifier is on, you receive only warm-up emails that include lemwarmup.

No. Marking legitimate lemwarm emails as spam damages the warm-up network and your mailbox's warm-up results. If you can't tell warm-up emails apart from other emails, turn the identifier back on and filter them by lemwarmup.