Troubleshooting Email Delivery Issues for a SaaS-based Service

Possible Reasons for Not Sending All Emails

Question

A marketing team is using a SaaS-based service to send emails to large groups of potential customers.

The internally managed CRM system is configured to generate a list of target customers automatically on a weekly basis, and then use that list to send emails to each customer as part of a marketing campaign.

Last week, the first email campaign sent emails successfully to 3,000 potential customers.

This week, the email campaign attempted to send out 50,000 emails, but only 10,000 were sent.

Which of the following is the MOST likely reason for not sending all the emails?

Answers

Explanations

Click on the arrows to vote for the correct answer

A. B. C. D.

A.

https://developers.google.com/analytics/devguides/config/mgmt/v3/limits-quotas

The most likely reason for not sending all the emails in the given scenario is API request limit (Option A). Here's why:

SaaS-based email services typically have API request limits in place to prevent abuse or overuse of the service. An API request is a request made to the email service to send an email, and each email sent counts as one API request. If the API request limit is exceeded, the email service will stop sending emails until the limit is reset.

In the given scenario, the first email campaign sent emails successfully to 3,000 potential customers, indicating that the email service was working properly. However, the second email campaign attempted to send out 50,000 emails, which is a significant increase in the number of emails sent. This increase could have caused the API request limit to be exceeded, resulting in only 10,000 emails being sent out.

Incorrect billing account (Option B) or misconfigured auto-scaling (Option C) are less likely to be the cause of the issue. If the billing account was incorrect, it would likely result in the email service not working at all, rather than partially working. Misconfigured auto-scaling, on the other hand, would result in issues with scaling the email service, rather than the email service itself not working properly.

Bandwidth limitation (Option D) is also less likely to be the cause of the issue. Bandwidth limitation refers to a lack of available network bandwidth, which can cause slow performance or issues with sending data. While it's possible that bandwidth limitation could be a factor, it's less likely than API request limit, which is a more common issue with SaaS-based email services.

In summary, the most likely reason for not sending all the emails is API request limit, as it's a common limitation for SaaS-based email services and the increase in the number of emails sent could have exceeded the limit.