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Relaykit is a fictional company. This is what clients see each week.

This week Trends Answers Agents

Relaykitanswersweek of Oct 19

You won 5 of 30 buyer questions this week.

Pick a question to see what each assistant did with it: whether it cited you, and who it cited instead.

Won 5

How do I send a transactional email with an API key from Python?Won18 of 20 answers cited you · 95% range 70–97%
- Claude 3/4
- ChatGPT 3/4
- Gemini 4/4
- Grok 4/4
- Perplexity 4/4
How do I handle email bounces and spam complaints in my app?Won14 of 20 answers cited you · 95% range 48–85%
- Claude 3/4
- ChatGPT 3/4
- Gemini 3/4
- Grok 2/4
- Perplexity 3/4
How do I make email sends idempotent so retries never double-send?Won15 of 20 answers cited you · 95% range 53–89%
- Claude 2/4
- ChatGPT 3/4
- Gemini 4/4
- Grok 4/4
- Perplexity 2/4
What hidden costs should I expect from a transactional email service?Won14 of 20 answers cited you · 95% range 48–85%
- Claude 2/4
- ChatGPT 3/4
- Gemini 4/4
- Grok 3/4
- Perplexity 2/4
Which email API is easiest for an LLM agent to call correctly?Won10 of 20 answers cited you · 95% range 30–70%
- Claude 2/4
- ChatGPT 2/4
- Gemini 2/4
- Grok 1/4
- Perplexity 3/4

Not won 25

What is the best email API for sending transactional email from a Node.js app?Not won2 of 20 answers cited you · 95% range 3–30%
- Claude 2/4
- ChatGPT 0/4
- Gemini 0/4
- Grok 0/4
- Perplexity 0/4
Which transactional email services do developers recommend right now?Not won2 of 20 answers cited you · 95% range 3–30%
- Claude 0/4
- ChatGPT 0/4
- Gemini 0/4
- Grok 0/4
- Perplexity 2/4
What email API should a startup use for password resets and receipts?Not won5 of 20 answers cited you · 95% range 11–47%
- Claude 3/4
- ChatGPT 1/4
- Gemini 1/4
- Grok 0/4
- Perplexity 0/4
Which email API has the simplest developer experience?Not won1 of 20 answers cited you · 95% range 1–24%
- Claude 0/4
- ChatGPT 1/4
- Gemini 0/4
- Grok 0/4
- Perplexity 0/4
Best email API with a generous free tier for side projectsNot won5 of 20 answers cited you · 95% range 11–47%
- Claude 0/4
- ChatGPT 0/4
- Gemini 1/4
- Grok 2/4
- Perplexity 2/4
Compare transactional email APIs by pricing and deliverabilityNot won1 of 20 answers cited you · 95% range 1–24%
- Claude 0/4
- ChatGPT 1/4
- Gemini 0/4
- Grok 0/4
- Perplexity 0/4
Email API versus running my own SMTP relay: which is better for a small team?Not won0 of 20 answers cited you · 95% range 0–16%
- Claude 0/4
- ChatGPT 0/4
- Gemini 0/4
- Grok 0/4
- Perplexity 0/4
Which email API has the most reliable webhooks for delivery events?Not won3 of 20 answers cited you · 95% range 5–36%
- Claude 2/4
- ChatGPT 0/4
- Gemini 1/4
- Grok 0/4
- Perplexity 0/4
What are the main differences between the popular email APIs for developers?Not won4 of 20 answers cited you · 95% range 8–42%
- Claude 1/4
- ChatGPT 1/4
- Gemini 2/4
- Grok 0/4
- Perplexity 0/4
Which email API has the best documentation?Not won6 of 20 answers cited you · 95% range 15–52%
- Claude 1/4
- ChatGPT 1/4
- Gemini 3/4
- Grok 1/4
- Perplexity 0/4
How do I choose an email API for a product that sends 100,000 emails a month?Not won2 of 20 answers cited you · 95% range 3–30%
- Claude 0/4
- ChatGPT 1/4
- Gemini 0/4
- Grok 1/4
- Perplexity 0/4
What should I look for in a transactional email provider?Not won0 of 20 answers cited you · 95% range 0–16%
- Claude 0/4
- ChatGPT 0/4
- Gemini 0/4
- Grok 0/4
- Perplexity 0/4
Which email API is best for a SaaS that needs custom sending domains per customer?Not won3 of 20 answers cited you · 95% range 5–36%
- Claude 1/4
- ChatGPT 0/4
- Gemini 1/4
- Grok 0/4
- Perplexity 1/4
Is it worth paying for a dedicated IP with an email API?Not won2 of 20 answers cited you · 95% range 3–30%
- Claude 0/4
- ChatGPT 1/4
- Gemini 0/4
- Grok 1/4
- Perplexity 0/4
How do I verify a sending domain with SPF, DKIM and DMARC?Not won4 of 20 answers cited you · 95% range 8–42%
- Claude 1/4
- ChatGPT 1/4
- Gemini 0/4
- Grok 1/4
- Perplexity 1/4
How do I receive inbound email in my application through an API?Not won6 of 20 answers cited you · 95% range 15–52%
- Claude 0/4
- ChatGPT 0/4
- Gemini 2/4
- Grok 3/4
- Perplexity 1/4
How do I test transactional email in CI without sending real messages?Not won4 of 20 answers cited you · 95% range 8–42%
- Claude 1/4
- ChatGPT 1/4
- Gemini 1/4
- Grok 0/4
- Perplexity 1/4
What does an email API cost at 100k emails a month?Not won0 of 20 answers cited you · 95% range 0–16%
- Claude 0/4
- ChatGPT 0/4
- Gemini 0/4
- Grok 0/4
- Perplexity 0/4
Which email APIs charge per message versus per contact?Not won1 of 20 answers cited you · 95% range 1–24%
- Claude 0/4
- ChatGPT 0/4
- Gemini 1/4
- Grok 0/4
- Perplexity 0/4
Are there email APIs with no monthly minimum?Not won7 of 20 answers cited you · 95% range 18–57%
- Claude 1/4
- ChatGPT 2/4
- Gemini 2/4
- Grok 1/4
- Perplexity 1/4
Which email API works with AI agents through an MCP server?Not won1 of 20 answers cited you · 95% range 1–24%
- Claude 0/4
- ChatGPT 1/4
- Gemini 0/4
- Grok 0/4
- Perplexity 0/4
Can an AI coding agent set up transactional email for my project by itself?Not won4 of 20 answers cited you · 95% range 8–42%
- Claude 2/4
- ChatGPT 0/4
- Gemini 1/4
- Grok 1/4
- Perplexity 0/4
Which email APIs have an official MCP server or agent toolkit?Not won3 of 20 answers cited you · 95% range 5–36%
- Claude 0/4
- ChatGPT 1/4
- Gemini 0/4
- Grok 1/4
- Perplexity 1/4
How do I let an AI assistant send email on behalf of my users safely?Not won4 of 20 answers cited you · 95% range 8–42%
- Claude 1/4
- ChatGPT 1/4
- Gemini 0/4
- Grok 0/4
- Perplexity 2/4
What email API documentation is easiest for coding agents to read?Not won0 of 20 answers cited you · 95% range 0–16%
- Claude 0/4
- ChatGPT 0/4
- Gemini 0/4
- Grok 0/4
- Perplexity 0/4

Based on AI assistants' answers, which can be wrong. Check the cited sources.

Official APIs, not the consumer apps.