Numbers › AI Visibility Index — India
AI Visibility Index — India · November 2026
Transactional email services: who AI assistants name for Indian startups (Nov 2026)
We asked 3 AI assistants 5 questions an Indian founder asks about transactional email services. Named in the most questions: Amazon SES (5 of 5 from memory, 5 searching the web), Postmark (5 of 5 from memory, 5 searching the web), Twilio SendGrid (5 of 5 from memory, 3 searching the web).
Who is named
| Tool | From memory | Searching the web | Claude Haiku (of 5) | GPT-4o mini (of 5) | Claude Haiku + web search (of 5) | Usual place |
|---|---|---|---|---|---|---|
| Amazon SES | 5 of 5 | 5 of 5 | 5 | 5 | 5 | #2 |
| Postmark | 5 of 5 | 5 of 5 | 5 | 5 | 5 | #4 |
| Twilio SendGrid | 5 of 5 | 3 of 5 | 4 | 5 | 3 | #1 |
| Mailgun | 5 of 5 | 3 of 5 | 3 | 5 | 3 | #3 |
| Resend | 1 of 5 | 4 of 5 | 1 | 0 | 4 | #5 |
Also named, not in our directory
- Brevo · 6
- ZeptoMail · 4
- Mailtrap · 3
- Zoho ZeptoMail · 3
- Mailjet · 2
- Moonsend · 2
- Sendinblue · 2
Questions buyers ask
Which transactional email services do AI assistants name most for Indian startups?
In our Nov 2026 run, Amazon SES (5 of 5 from memory, 5 searching the web), Postmark (5 of 5 from memory, 5 searching the web), Twilio SendGrid (5 of 5 from memory, 3 searching the web) were named in the most buyer questions. This counts how often an assistant names a tool; it does not say which tool is better.
Which transactional email services did AI assistants not name?
Every tool in our directory for transactional email services was named at least once in the 5 questions asked on 9 November 2026.
How were these AI answers collected, and will they change?
On 9 November 2026 we sent each of the 5 questions once to Claude Haiku and GPT-4o mini and Claude Haiku + web search through their APIs, with no company named in the question (from memory: Claude Haiku (Anthropic) and GPT-4o mini (OpenAI), with no web search · searching the web: Claude Haiku + web search (Anthropic), one search per answer, asked 10 November 2026): 15 answers. The same question can get different names on another day, so read this as one dated snapshot.
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Run the free checkThe 5 questions, and the names in each answer
1. Best transactional email service for an Indian SaaS startup (password resets, receipts)?
- Claude Haiku · from memory
- Amazon SES → Mumbai → Postmark → SendGrid → Mailgun → Zoho ZeptoMail → ZeptoMail
- GPT-4o mini · from memory
- SendGrid → Amazon SES → Mailgun → Postmark → Sendinblue → Pepipost → Moonsend
- Claude Haiku + web search · searching the web
- Postmark → Resend → Amazon SES → Mailgun → Brevo → ZeptoMail
2. Which email API should a developer in India use for app emails?
- Claude Haiku · from memory
- Amazon SES → Postmark → SendGrid → Brevo → Resend
- GPT-4o mini · from memory
- SendGrid → Mailgun → Amazon SES → Postmark → Mailjet → SparkPost
- Claude Haiku + web search · searching the web
- Resend → Amazon SES → Postmark → SendGrid → Mailgun
3. Cheapest reliable email sending API for an Indian startup?
- Claude Haiku · from memory
- Amazon SES → Brevo → Zoho ZeptoMail → ZeptoMail → Postmark
- GPT-4o mini · from memory
- SendGrid → Amazon SES → Mailgun → Postmark → Mailjet
- Claude Haiku + web search · searching the web
- Amazon SES → Mailtrap → Resend → Postmark → Reloop
4. SendGrid alternatives for an Indian startup?
- Claude Haiku · from memory
- SendGrid → Amazon SES → Postmark → Mailgun → Brevo → Zoho ZeptoMail → MSG91 → Gupshup → Mailchimp
- GPT-4o mini · from memory
- SendGrid → Mailgun → Amazon SES → Postmark → MailerLite → Moonsend → Zoho Campaigns
- Claude Haiku + web search · searching the web
- Postmark → Resend → Amazon SES → Brevo → Mailgun → SendGrid → Mailtrap → Loops → ZeptoMail
5. Email API with good deliverability to Gmail in India — what do you recommend?
- Claude Haiku · from memory
- Amazon SES → Postmark → SendGrid → Mailgun → Brevo
- GPT-4o mini · from memory
- SendGrid → Mailgun → Sendinblue → Amazon SES → Postmark
- Claude Haiku + web search · searching the web
- Postmark → Amazon SES → Mailtrap → SendGrid
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