Quick verdict
Use one transactional email provider and one lifecycle tool. Keep the setup simple until volume proves otherwise.
Best for
- Resend: app-triggered email
- Loops: lifecycle campaigns
- SendGrid: mature email operations
Watch out for
- Warm domains carefully
- Separate billing and security messages from marketing
Recommended stack
Resend
Loops
Supabase
SilkRouter
Where SilkRouter fits
Your hosting, CRM, email, and automation tools should not force one model provider forever. SilkRouter gives AI startups one API for supported AI models, so routing and spend visibility can live in one place.
One API For All AI Models