From the team
Practical guides on cold email, deliverability, prospect research and outbound automation from the team behind SDRclose.
Google Workspace leads on measured reply rate, Microsoft 365 suits Microsoft-heavy lists, and the cold email community warns hard against Zoho. Here is the data behind each verdict, plus the SMTP, IMAP and DNS setup.
A new mailbox on an aged domain needs two to four weeks. A brand new domain needs four to eight, and 30 days is the floor most 2026 guidance now uses. Here is the schedule and the stop signal.
Operators quote 15, 30 to 50 and 100 a day per inbox, and all three can be right. Here is what the 2026 datasets show, where the provider ceilings sit, and how to size inboxes and domains for your target.
Authentication passes and placement is still broken. Here are the seven causes that survive a clean SPF, DKIM and DMARC setup, the test that identifies each one, and the order to work through them.
Cold email is generally legal in the US, the UK and most of the EU, and generally not without consent in Germany, Austria and Switzerland. Here is the country matrix, the penalties, and a 14-item compliance checklist.
A reply count with no classification is inbox noise. Here are the eight buckets every cold email reply falls into, how to detect each one automatically, and which ones deserve a human within two minutes.
Apollo bills per seat and, in reported breakdowns, expires credits each cycle, while reviewers report bounces on contacts labeled verified. Here is what the alternatives cost a team of one to ten, and where a per-workspace plan wins.
Lemlist's Email plan is flat, but Multichannel is priced per user and credits are billed on top. Here is what four seats really cost in a year, and which alternatives handle research, replies and booking instead.
Reply.io prices per user, stacks LinkedIn and calling on every seat, and sells Jason AI separately at a reported $500 a month. Here is how the alternatives compare on price, channels and what happens after a prospect replies.
An out of office reply proves the inbox is real, yet most tools retire the lead. Here is the full loop: detect, parse the return date, pause, resume on the next business day, and mine the notice for a second contact.
Smartlead is cheap, popular and purely a sending engine. Here is what the add-on stack really costs in 2026, which alternatives add research and reply handling, and when Smartlead is still the right buy.
Instantly is a strong sequencer, but the reply inbox is gated on its entry plan and lead credits are billed separately. A dated 2026 comparison of the alternatives, including when Instantly is still the right call.