Concurrent-limit hit notification

When a call is rejected because your account has already reached its effective concurrent-call limit, TryVox sends an email to the account's primary address with an upgrade CTA.

When it fires

The notification triggers on every TryVox rejection where:

reason = "concurrent call limit exceeded"

It does not fire on calls-per-second (CPS) rejections or on rejections from upstream carriers — only on TryVox's own concurrent-call gate.

Debounce

To avoid filling inboxes during a sustained burst, the notification is debounced per account at 6 hours. The first rejection in a window sends an email; every subsequent rejection within the same window is suppressed silently.

If you hit the limit at 09:00, the next email you could possibly receive is at 15:00. A short burst at 09:00 and another at 11:30 produces exactly one email — at 09:00.

Recipient

• Sent to the primary email on file for your tenant.
• For postpaid tenants with a notification_email configured on the billing profile, that address is used instead (postpaid only).

What's in the email

The email lists the limit you hit, how many calls were active when the gate fired, and a deep link to the Buy channels page so you can raise capacity without leaving the alert.

Subject: Your TryVox account is hitting its concurrent call limit

You just rejected a call because your account is at its concurrent-call
ceiling.

  Current limit:     10
  Active calls:      10
  Upgrade:           https://app.tryvox.io/app/billing/channels

Turning it on/off

This feature is account-wide and managed by TryVox operations — there is no per-account toggle in the dashboard today. If you don't want the email and would prefer a webhook instead, let support know.

Related

• Concurrent-call channels — how to raise your effective limit.
• Webhooks — programmatic event delivery.