- A
Cloud Tasks with an email delivery queue
Why wrong: Cloud Tasks queues and dispatches HTTP requests — it doesn't have email-sending capabilities itself. A separate email service is still needed.
- B
A third-party email delivery service such as SendGrid or Mailgun, integrated via API
GCP doesn't include a native email service. Transactional email is handled by third-party providers (SendGrid, Mailgun, Mailchimp) accessed via their APIs from GCP-hosted applications.
- C
Cloud Pub/Sub with an email topic subscriber
Why wrong: Pub/Sub is a message queuing service — it doesn't have email delivery capabilities.
- D
Cloud Functions triggered by Gmail API webhooks
Why wrong: Gmail API is for managing individual Gmail accounts — it's not designed for transactional application email delivery at scale.
Quick Answer
The correct choice is a third-party email delivery service like SendGrid or Mailgun, integrated via API. This is because Google Cloud Platform does not offer a native service for sending high-volume transactional emails; instead, it relies on external providers that specialize in SMTP relays, dedicated IPs, and sender reputation management to ensure reliable delivery of critical messages like order confirmations and password resets. On the Google Associate Cloud Engineer exam, this question tests your understanding of GCP’s service boundaries—specifically that Cloud Functions or App Engine handle application logic, not email delivery. A common trap is assuming Cloud Mail or a built-in GCP service exists for this purpose, but no such native option is available. Remember the memory tip: “GCP hosts the app, not the email stack”—so always reach for a third-party API when you need to send transactional email from a GCP application.
Google ACE Planning and configuring a cloud solution Practice Question
This ACE practice question tests your understanding of planning and configuring a cloud solution. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A startup needs to send transactional emails (order confirmations, password resets) from their GCP-hosted application. Which GCP service handles high-volume email delivery?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
A third-party email delivery service such as SendGrid or Mailgun, integrated via API
B is correct because GCP does not provide a native high-volume transactional email service. Third-party email delivery services like SendGrid or Mailgun are designed specifically for this purpose, offering dedicated SMTP relays, APIs, and reputation management to ensure reliable delivery of transactional emails such as order confirmations and password resets.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Cloud Tasks with an email delivery queue
Why it's wrong here
Cloud Tasks queues and dispatches HTTP requests — it doesn't have email-sending capabilities itself. A separate email service is still needed.
- ✓
A third-party email delivery service such as SendGrid or Mailgun, integrated via API
Why this is correct
GCP doesn't include a native email service. Transactional email is handled by third-party providers (SendGrid, Mailgun, Mailchimp) accessed via their APIs from GCP-hosted applications.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Cloud Pub/Sub with an email topic subscriber
Why it's wrong here
Pub/Sub is a message queuing service — it doesn't have email delivery capabilities.
- ✗
Cloud Functions triggered by Gmail API webhooks
Why it's wrong here
Gmail API is for managing individual Gmail accounts — it's not designed for transactional application email delivery at scale.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the misconception that GCP provides a built-in email delivery service, leading candidates to choose Cloud Tasks or Pub/Sub, but these are generic messaging services that require integration with a dedicated email provider to actually send emails.
Detailed technical explanation
How to think about this question
Third-party email services like SendGrid use dedicated IP pools, DKIM/DMARC authentication, and feedback loops to maintain sender reputation and high deliverability. They also provide webhook-based event tracking (e.g., opens, bounces, clicks) that can be integrated into GCP via Cloud Functions or Pub/Sub for real-time monitoring. Under the hood, these services handle SMTP relay, rate limiting, and queue management that GCP's native services lack.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this ACE question test?
Planning and configuring a cloud solution — This question tests Planning and configuring a cloud solution — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: A third-party email delivery service such as SendGrid or Mailgun, integrated via API — B is correct because GCP does not provide a native high-volume transactional email service. Third-party email delivery services like SendGrid or Mailgun are designed specifically for this purpose, offering dedicated SMTP relays, APIs, and reputation management to ensure reliable delivery of transactional emails such as order confirmations and password resets.
What should I do if I get this ACE question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jun 30, 2026
This ACE practice question is part of Courseiva's free Google Cloud certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the ACE exam.
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