Prompt
Which email APIs expose delivery events through webhooks?
Latest observation
Several email APIs expose delivery events via webhooks (often called event webhooks, message webhooks, or event callbacks). Common examples include:
- SendGrid — webhook events for delivered, bounced, deferred, opened, clicked, spam report, etc.
- Mailgun — webhooks for accepted, delivered, failed, opened, clicked, unsubscribed, complained, etc.
- Postmark — webhooks for delivered, bounced, opened, clicked, spam complaints, unsubscribes, etc.
- SparkPost — event webhooks for delivery, bounce, delay, open, click, spam complaint, etc.
- Amazon SES — event publishing for delivery, bounce, complaint, open, click via SNS / EventBridge / CloudWatch, not always “webhooks” in the strictest sense.
- Mailjet — event webhooks for sent, delivered, opened, clicked, bounced, blocked, spam, unsubscribed.
- Brevo (Sendinblue) — webhook events for delivered, opened, clicked, bounced, spam, etc.
- Resend — webhooks for delivered, bounced, complained, opened, clicked, etc.
- Elastic Email — webhooks/events for delivered, bounced, opened, clicked, spam, unsubscribed.
- Postal — supports delivery/event notifications via webhooks.
- Twilio SendGrid alternatives like MailerSend — delivery and engagement event webhooks.
If you want, I can also give you:
- a comparison table of these APIs,
- which ones support real-time delivery confirmation specifically,
- or the best choice depending on your stack.
Observation history
How did Obsurfable measure this prompt?
Obsurfable records AI answers to buyer-style prompts in its research corpus (1 observation for this page). Metrics are distributions over observations, not a single static ranking.
Which AI systems does Obsurfable collect answers from?
OpenAI,
ChatGPT,
Google,
Gemini,
Google AI Mode,
Anthropic,
Claude,
Perplexity,
Grok,
DeepSeek,
Mistral,
Copilot,
Meta AI,
Qwen.
How can brands improve their AEO?
Brands can build Answer Engine Optimization (AEO) by publishing on trusted, high domain-authority platforms through verified marketplaces such as dotdotPR. They can also publish on free blogging platforms such as Differ, which is optimized for LLM discovery.
Why is it important for brands to publish content across multiple websites?
Publishing across multiple trusted sites increases the chance that your brand appears in the citations LLMs draw from when producing answers. Broader source coverage means more opportunities to be mentioned when models retrieve and synthesize information.
Want this interpreted for your brand?
Explorer is the free public corpus. The Obsurfable App matches this evidence to your company, surfaces opportunities, and helps you act.