Reference
Limits & retention changelog
Changes to Limits & retention: new features, improvements and fixes.
September 2026
Changed
Subscriber and webhook limits per plan
AudiencesWebhooksLimits & retention
Limit Pay as you go Pro Business Subscribers per audience 10,000 50,000 250,000 Webhook endpoints 3 10 100 Webhook payload filters Not available Available Available Custom plans have no subscriber limit. The subscriber limit applies when you add subscribers, import contacts, use an audience’s subscribe URL and run automations. Creating a webhook above your limit returns
422, and the Audiences and Webhooks pages show how much of each limit you use.On Pay as you go, setting a payload filter returns
403withplan_required, and existing filters are ignored. See Limits.Changed
Automatic sending limit increases on Pro and Business
Limits & retentionDeliverability
Emailit raises the per-second and daily sending limits of healthy Pro and Business workspaces automatically, at most once every 7 days.
On Pay as you go, your limits stay the same until you ask for more with Request Increase on the dashboard’s Sending Limits card. See Limits.
October 2025
Changed
Per-second and daily rate limits
Limits & retentionEmail APISMTP relay
Requests over the limit are rejected instead of queued, so configure your client to send at most 2 emails per second or to retry rejected sends. The change was rolled out to workspaces gradually.
See Rate limits.