Reseller inboxes matched hand-built ones in Nowoslawski test
Eric Nowoslawski finally got a side by side: a client who bought domains one at a time and set up every DKIM by hand got the same reply rate as his Zapmail inboxes, and the cheap .pro domains beat both.
Read the whole week in one goShields: 21-word email, 7.1% reply rate
Landing in the inbox
Nowoslawski: Zapmail inboxes matched hand-built ones on reply rate
Eric Nowoslawski compared a client's manually built inboxes against his own reseller inboxes and says reply rates came out level. The client bought domains one by one, put them in their own aged admin console, set up each DKIM by hand and paid full Google portal price, then loaded them into Smartlead.
not only did the Zapmail inboxes have the same reply rate, the .pro domains had the best reply rate
Haren says Azure inboxes are getting cooked, lost 49% in a day
Taylor Haren says he is seeing operators on X and LinkedIn report Azure inboxes failing, some claiming up to 30% can no longer deliver. His explanation is tenant risk: a $1 Azure mailbox sits inside somebody else's tenant next to other cold senders, so Microsoft punishes everyone at once.
You were getting a mailbox inside somebody else’s tenant, alongside a bunch of other people sending cold email.
Campaigns and numbers
Nowoslawski says AI lists need 8+ filters to produce leads
Eric Nowoslawski says the thing that made his no-human-in-the-loop campaign agent work was a list rule: at least 8 search filters, or as many as you can hold while keeping 3,000 contacts. Audits showed the messaging was broadly right but thin contact by contact, because the agent was building the usual headcount, title, location and industry lists.
any campaign we launched needed to have at least 8 search filters (or the most you could have while retaining 3,000 contacts in the list) in order for an agent to be successful