Communication Services: Email Quota Increase Request — Limit Exceeded During Peak Hours

Question

Communication Services: Email Quota Increase Request — Limit Exceeded During Peak Hours

Victor-4156 0

Problem description

I am experiencing issues with sending emails through Azure Communication Services Email, as my messages are being blocked due to exceeding the per-subscription per-hour limit (PerSubscriptionPerHourLimitExceeded). This problem occurred during a sales peak, which caused a high volume of transactional and order emails.

Environment

Service: Azure Communication Services; Resource: ACS-cpro; Region: United States (global data location)

What I've already tried

I have reviewed the self-service guidance for Azure Communication Services Email, which states default limits and the process to request a higher quota. I have also submitted a quota increase request, but I have not documented any further tests or validations beyond the initial request.

Current status

Currently, I am waiting for the analysis of my quota increase request to support higher email volumes, specifically aiming for 50,000 emails per hour and 250,000 per day, to accommodate peak platform activities. I seek guidance on the next steps and confirmation on the new quota limits.

Erland Sommarskog 137.5K Reputation points MVP Volunteer Moderator

2026-09-17T20:34:24.06+00:00

It seems that you posted two Questions about the same thing. I marked the second one as a duplicate. It seems that that post included more information that can be helpful someone who is trying to help you. I would recommend that you post that information as a Comment to this question.

I would recommend that you adjust the font to a normal size to make it easier to read. (In your other post, a lot of information was posted with a big font size. Beware that the editor in this forum make take a leading # on a line to mean "header line".

1 answer

Your answer

Erland Sommarskog 137.5K Reputation points MVP Volunteer Moderator

2026-09-17T20:34:24.06+00:00

It seems that you posted two Questions about the same thing. I marked the second one as a duplicate. It seems that that post included more information that can be helpful someone who is trying to help you. I would recommend that you post that information as a Comment to this question.

I would recommend that you adjust the font to a normal size to make it easier to read. (In your other post, a lot of information was posted with a big font size. Beware that the editor in this forum make take a leading # on a line to mean "header line".

Answer 1

Hi @Victor-4156

For an App** Service quota **increase, please use the Azure portal quota experience:

Sign in to the Azure** **portal and search for Quotas.
Select App** Service (Public ****Preview)**.
Select/filter the affected subscription** and **region.
Locate the required App** Service Plan **SKU and review its current usage and limit.
Select the quota and submit a request for the required new** total **limit.

Please note that the requested value should represent the total** quota required after the **increase, not only the additional number of instances needed.

If the automated quota request cannot be fulfilled, the quota experience provides an option to open a support** **request for further review.

References: