Blog
Deliverability
Authentication, reputation and inbox placement.
20 October 2026
Warming up a new sending domain in six weeks
A six-week warmup plan for a new sending domain: engagement tiers, the signals that tell you to slow down, and how Mailnaptic's warm-up levels fit.
Read article
6 October 2026
Gmail and Yahoo sender requirements, with the real thresholds
What Google and Yahoo actually require from senders: the 5,000 a day line, 0.10% and 0.30% spam rates, authentication, unsubscribe rules and SMTP error codes.
Read article
1 October 2026
How to set up SPF, DKIM and DMARC for a new sending domain
A practical guide to publishing SPF, DKIM and DMARC for a new sending domain, verifying them, and moving DMARC from none to reject.
Read article