Go to Settings → Subscription and click Upgrade to Enterprise or Downgrade to Startup on the plan cards. Either change takes effect immediately and is prorated. An upgrade charges the difference for the rest of your billing period right away. A downgrade credits the unused part of your Enterprise period to your account balance, which is applied to your next invoice. Neither change deletes domains or mailboxes.
Upgrading: the mechanics
Startup → Enterprise:
- Your plan switches immediately.
- You're charged the price difference for the rest of the current billing period, prorated by the days remaining.
- Your limits go up: 200 included mailboxes (plus any credits you keep), a domain limit of at least 40, and a higher API rate limit (500 requests per minute instead of 300).
- Enterprise also includes a 1:1 onboarding call, and dedicated IPs become available as an add-on.
Downgrading: the mechanics
Enterprise → Startup:
- Your plan switches immediately.
- The unused part of your Enterprise period becomes account credit, applied to your next invoice.
- Your included mailboxes drop to 50 (plus credits). Your domain limit stays where it is.
- From your next renewal you pay the Startup price.
What stays the same
- Your domains and mailboxes. A plan change never deletes anything.
- Warming, dedicated IPs, and pre-warmed addresses.
- Your billing date.
What's next
Step-by-step
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1. Open Subscription settings
Go to Settings → Subscription.
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2. Scroll to the plan cards
Startup and Enterprise are shown side by side. Your current plan is marked Current Plan.
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3. Click Upgrade to Enterprise or Downgrade to Startup
The change is applied right away. If your bank requires extra verification for the charge, the app asks you to complete it.
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4. Check the result
The page reloads with your new plan, limits, and cost breakdown. Any prorated charge or credit appears in your billing.
Frequently asked questions
What happens to my mailboxes on downgrade?
They all keep working. Your email-user limit drops to Startup's 50 plus any email-user credits you have. If you're already above that, nothing is deleted, but creating more mailboxes adds credits at $1 per mailbox per month (the app shows the cost before you confirm).
What happens to my domain limit on downgrade?
It doesn't go down. Winnr keeps the higher of your current domain limit and the new plan's default, so a downgrade never forces you to delete domains.
Do I get money back when I downgrade mid-cycle?
You get a prorated credit automatically, not a refund to your card (you can still ask support for a refund of your most recent month; see the [refund policy](/help/billing/refunds.html)). The unused part of your Enterprise period is added to your account balance and applied to your next invoice. It shows as "Account Credit" in Settings → Subscription.
What happens to my email-user credits when I change plans?
If the new plan's included mailboxes already cover some of the credits you bought, Winnr lowers your credits automatically so you don't pay twice. For example, Startup with 50 credits (100 mailboxes in use) moving to Enterprise drops to 0 credits, because Enterprise already includes 200. A plan change never adds credits on its own.
Are my other add-ons affected?
No. Warming, dedicated IPs, and pre-warmed addresses carry on unchanged.
Can I downgrade after an upgrade?
Yes, any time. Same flow, and it's prorated the same way.