Koltrix
Deliverability
The case against noreply@ addresses
A noreply sender discards replies that signal engagement and frustrates customers. Route replies to a real inbox instead and set expectations clearly.
4 min read
DeliverabilityWhy transactional email lands in Gmail Promotions
Receipts and alerts in the Promotions tab are usually a content and stream problem. The signals Gmail likely uses and changes that tend to help.
4 min read
DeliverabilitySpam filter myths: trigger words, images and link counts
Modern filters care far more about reputation and engagement than single words. Which content folklore is outdated and which content issues still matter.
4 min read