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Sendmux API
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Schema
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Billing
3
get
/billing/balance
Get current balance
get
/billing/summary
Get spend summary
get
/billing/transactions
List transactions
Connection
1
Domain Filters
2
Domains
7
Emails
3
Inboxes
2
Mailbox API
52
Mailbox Filters
2
Mailboxes
13
Sending accounts
15
Webhooks
9
Billing
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Changes to Get spend summary
get
/billing/summary
Sep 9, 2026
7807ce923952
Revision changes
info
the endpoint scheme security
oauth2
was added to the API