Topic
Deliverability
Articles on Deliverability from the toSend team: field notes, essays, and build logs.
Deliverability 
Shahjahan Jewel · · 12 min Deliverability Shahjahan Jewel · · 5 min
The email deliverability checklist we wish everyone had
A practical checklist for giving your email a better chance of reaching the inbox: authentication, permission, list hygiene, unsubscribe, and monitoring.
Shahjahan Jewel · · 12 min Outlook.com now rejects email from domains without DMARC
Since early November 2026, Microsoft turns away some email to Outlook, Hotmail, Live and MSN addresses when the sending domain has no DMARC record. The fix is one DNS record, and on Cloudflare it takes a minute.
Shahjahan Jewel · · 5 min Ready to send? Your first 30 days are on us.
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