What do you wish transactional email APIs did better for AI agents?

We're launching CapiMail here on Nov 13, and I'd love to hear from people who send OTPs, password resets, receipts or alerts, especially if an AI agent is doing the sending.

A few questions:

• What's the most painful part of your current email provider: setup, deliverability, debugging, or pricing?

• If your agent sends email, how do you stop it from sending duplicates or the wrong thing?

• Would you rather connect through an MCP server, an SDK, or plain HTTP?

• Payments are QRIS-only for now (Indonesia's QR payment standard), so international cards aren't supported yet. If you're outside Indonesia, which payment method would you need?

Every answer shapes what we build next. Thanks!