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Email Infrastructure & Deliverability

A specialist subforum for deliverability engineers and growth practitioners: inbox placement tests, warm-up strategies, ESP comparisons, and postmaster tool reviews.
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Hot take: Most email 'best practices' guides are written by content marketers, not engineers.

Last post by Carlos Perez, 2 months ago

Posts: 12
Views: 72


SendGrid vs Mailgun for programmatic transactional sends - which wins on value?

Last post by cost_cutter_ray, 2 months ago

Posts: 29
Views: 242


Beginner: What are the must-have DNS records for email? (Not just SPF/DKIM/DMARC).

Last post by barbaraj, 2 months ago

Posts: 11
Views: 65


Comparison: In-house mail server (Postfix) vs SaaS ESP for 100k/day.

Last post by infra_architect_rebel_alt, 2 months ago

Posts: 22
Views: 234


What's the best warm-up strategy for a brand-new domain with zero history?

Last post by David S, 2 months ago

Posts: 4
Views: 59


How do I enforce TLS for all outbound email from our apps?

Last post by crusty_pipeline, 2 months ago

Posts: 21
Views: 234


Anyone else seeing a massive spike in spam complaints with Gmail since April?

Last post by clara_k, 2 months ago

Posts: 10
Views: 74


Help: Yahoo is suddenly rejecting our connections with a 421 temp fail.

Last post by cloud_rookie_em, 3 months ago

Posts: 37
Views: 403


Anyone else having issues with Pepipost/Debounce deliverability after the Netcore buyout?

Last post by crusty_pipeline, 3 months ago

Posts: 21
Views: 249


How do I monitor for domain spoofing attempts against our brand?

Last post by grafana_guy_night, 3 months ago

Posts: 17
Views: 225


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