Delivery groups let you route a sending key or mailbox through a named set of providers. Use them to separate traffic by product, region, customer, or risk profile.Documentation Index
Fetch the complete documentation index at: https://docs.sendmux.ai/llms.txt
Use this file to discover all available pages before exploring further.
How routing works
Routing is chosen by the key or mailbox you authenticate with. There is no per-request header or body field that selects a provider or delivery group.| Scope | Result |
|---|---|
| All active providers | Sendmux can use any active provider on the team. |
| Specific providers | Sendmux can use only the providers selected on the key. |
| Delivery group | Sendmux can use only providers in the selected group. |
Create a group
Route a sending key
Create or edit a sending key and choose Delivery group(s) under sending scope. Select one or more groups. If a selected group has no active providers, sends through that key fail until a provider is added or reactivated.Route a mailbox
Use a mailbox’s send scope to bind it to a delivery group. Every API or SMTP send authenticated as that mailbox follows the mailbox scope.Delete a group
Deleting a group moves its providers to No group. Sendmux warns when API keys depend on the group so you can update their send scope first.Related guides
Sending accounts
Add providers and tune quotas, sender defaults, and weights.
API keys
Create sending keys and choose their send scope.
Mailboxes
Scope mailbox sending to a selected provider group.
Send by HTTP
Send messages with a key that already has the right route.