Prompt
What would you use for email on a new SaaS?
Latest observation
For a new SaaS, I’d usually use an email service provider (ESP) rather than trying to run email yourself.
My default picks
- Postmark — best if you care most about transactional email (password resets, receipts, invites, alerts). Very reliable and simple.
- SendGrid — good all-around choice, especially if you want a mix of transactional + marketing and need lots of integrations.
- AWS SES — cheapest at scale, but more setup and less friendly.
- Mailgun — decent for developer-focused transactional email.
- Resend — modern, developer-friendly, especially if you’re building with React/Next.js.
What I’d choose in practice
- Early-stage SaaS: Postmark or Resend
- Need marketing + transactional in one place: SendGrid or Mailgun
- Very cost-sensitive / high volume: AWS SES
- B2B app with important system emails: Postmark
Recommended setup
Use separate streams:
- Transactional emails: Postmark/Resend/SES
- Marketing emails: ConvertKit, Mailchimp, Customer.io, or HubSpot
That helps protect deliverability for critical app emails.
Important setup items
Whichever provider you choose, make sure to configure:
- SPF
- DKIM
- DMARC
- A proper sending domain like
mail.yourdomain.com - Separate from addresses for transactional vs marketing
If you want the shortest answer
If I were launching a new SaaS today, I’d start with:
Postmark for transactional email
and
Customer.io or Mailchimp for marketing email if needed later.
If you want, I can also recommend a stack based on your SaaS size, budget, and whether you need marketing emails too.
Observation history
How did Obsurfable measure this prompt?
Obsurfable records AI answers to buyer-style prompts in its research corpus (2 observations 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.
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