LEARN
What we learned
building the engine.
Every guide here comes out of code that runs in Quotarider — the rules our spam checker enforces, the thresholds Google actually applies, the query that decides a deal has stalled. Not a summary of somebody else's article. If a number appears below, it is the number in the product.
DELIVERABILITY
The 16 things that put a cold email in spam
Our checker refuses to send on sixteen rules. Each one, what it catches, and why it matters more than the copy.
Read →DELIVERABILITY
Google counts 5,000 a day per domain, not per mailbox
Twenty mailboxes sending twenty each is 400 — and 400 against a line most senders never realise they are approaching.
Read →PIPELINE
A stalled deal and a dead deal look identical
Days since last activity is not the signal. What our nudge engine actually measures, and why it counts against your own cycle.
Writing this one →REVENUE
The money already earned and never invoiced
Won deals with no invoice, invoices raised outside the pipeline, duplicates counted twice. Four queries that find it.
Writing this one →OUTBOUND
Writing a sequence that does not annoy anyone
Send windows, reply detection, out-of-office handling, and the one rule that matters more than all of them.
Writing this one →ATTRIBUTION
Which email got paid
Most tools stop at the reply. The chain from first touch to a cleared invoice is one query if the data is joined.
Writing this one →Why this is not a blog. Each guide states what the product does and the number it uses. Where we do not know something, it says so. There are no invented case studies here and no customer logos we have not earned — if you find a claim you cannot check, tell us and we will pull it.