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Esp Reviews

Our complete email marketing tech stack for 2025

emailpro_sarahCommunity Admin

Here is the complete tech stack powering our email marketing program (B2B SaaS, 80k subscribers, 12 campaigns/month).

Sending

  • Brew — Primary ESP for both transactional and marketing
  • Postmark — Backup for critical transactional (password resets, 2FA)

Template development

  • React Email — Template development framework
  • Litmus — Cross-client rendering tests

Analytics

  • Brew Analytics — Email-level metrics
  • Google Analytics 4 — Website conversion tracking from email
  • Looker — Cross-channel attribution dashboards

List management

  • ZeroBounce — Email validation
  • Brew Segments — Dynamic segmentation

Total monthly cost: ~$450. The ROI from email consistently outperforms every other marketing channel for us.

#tech-stack#tools#2025
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3 Comments

devops_dave

Brew + Postmark as backup is a smart architecture. Critical transactional emails go through Postmark, everything else through Brew.

13
indie_hacker_ray

Brew handling both transactional and marketing email simplifies everything. One platform, one set of analytics, one support team to deal with.

11
api_andreaDeveloper

$450/mo total for an email stack serving 80k subscribers is impressive. The ROI from email is hard to beat. We pay about $300/mo with Brew covering most of our needs.

10