Workflow
Verify your list before warming up a mailbox
A new mailbox builds a sending history in its first weeks. Early bounces mark that history, so the list that follows should already be clean.
Order
Warm-up traffic is usually between mailboxes you control. Verify your prospect list in the same period, so it is ready when the warm-up ends and no early campaign bounces.
Staging
Start with the valid addresses you trust most, in small batches, and watch bounces before increasing volume. Follow your mailbox provider’s published limits.
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