Field notes from the email frontier.
Permission, engagement, reputation. Long-form posts on how email actually lands — written by people who built one of these things before.
- Isaac Saldana
GoodSender vs Mailgun vs SendGrid vs Resend: an honest comparison from people who built one of them
A four-way email API comparison written by people who co-founded one of them. Where Mailgun, SendGrid, Resend, and GoodSender each win — and where each one costs you.
comparison sendgrid mailgun resend pricingRead post - Givi Pataridze
How consent-gated email works (and why it's free)
Per-email pricing is mostly an abuse-fighting tax. GoodSender's Permission Loop removes the abuse surface by construction — which is why the first 100,000 emails a month cost $0.
permission loop consent pricing deliverabilityRead post - Givi Pataridze
Per-email pricing is a tax on bad senders. You're paying it.
Most of what an email API charges you covers anti-abuse work, not infrastructure. Clean senders subsidize dirty ones. Remove the abuse surface, and the price collapses.
pricing deliverability permission loopRead post