How it works
How credits work
A credit is one unit for all your work: sending, verifying contacts, writing with AI and holding domains. Your plan's credits are used first, then any you've topped up.
Everything you do on Six and Two runs on credits. A credit is one unit for all of it, so there's one balance to see.
Where credits go
- Sending an email.
- Verifying a contact.
- Writing with AI.
- Each domain you hold, for the time you hold it.
Which credits go first
There are two kinds of credit, and they're used in order:
| Order | Kind | Each month |
|---|---|---|
| First | Your plan's credits | They refill |
| Then | Credits you've topped up | The refill never resets them |
So a top-up stays there until it's used.
Mail on its way never stops
Credits never stop mail that's already on its way. Once your mail is sending, it isn't held up by your balance.
Where you see them
Open Usage. It shows what's left: the credits remaining, and what you've used of your plan's. The bar fills as your plan's credits are used.


This month shows what used them: sends, contact verifications, AI generations and domain slots. Below them are your deliverability and today's use so far.


Previous months keeps every month before this one, with what each one used.


If your plan's credits refill on a set date, Usage shows it.
Check your usage and credits takes you through the page.
Why it works this way
One unit covers all of it, so there's one balance to see. Your plan's credits are always used first. A top-up is never reset, so what you add stays there until it's used. And credits never stop mail that's already on its way.
Related
- Check your usage and creditsOpen Usage. The top shows the credits you have left, what you've used and the date they refill. Below, this month is split by what used them, and Previous months keeps the record.Step by step · 5 steps
- Choose or change your planOpen Manage Subscription to see your plan and the plans you can choose. With a card saved on Billing, press a plan's button and it's yours straight away.Step by step · 7 steps
- Your billing: card, credits and statementsOpen Billing to keep your card current, see your plan and your credit balance, buy more credits, and find every monthly statement.Step by step · 6 steps
