How many mailboxes can I connect and warm up?
Connected mailbox limits by plan (account-wide, across all your workspaces):
- Pro ($14.99/mo): 50 mailboxes
- Enterprise ($69.99/mo): 400 mailboxes
- Ultimate ($199/mo): 800 mailboxes
- Free tier: 2 mailboxes
There is no per-mailbox fee on any paid plan — you can warm up every connected mailbox at no additional cost, up to your plan's cap. Email warmup runs on all connected mailboxes simultaneously. Your other constraint is your monthly email quota (e.g., 10,000/month on Pro), which is shared across all mailboxes and all sending activity (warmup + campaigns). Need more than 800 mailboxes? Contact [email protected] for a custom limit.