
Spam Trigger Words: Do They Actually Hurt Deliverability?
Do spam trigger words like ‘free’ or ‘act now’ hurt deliverability? What Gmail, Yahoo, Outlook and SpamAssassin document, and what’s rumor. ...
Behind-the-scenes notes from running real experiments. The setup decisions, the trade-offs, and the things I got wrong along the way, written down while they’re still fresh.

Do spam trigger words like ‘free’ or ‘act now’ hurt deliverability? What Gmail, Yahoo, Outlook and SpamAssassin document, and what’s rumor. ...

Do Instagram saves help reach more than likes? What Instagram documents about saves, likes and sends, and which creator claims hold up.

Some advertisers buy likes and comments to make Meta ads look popular. Here’s what Meta documents about the algorithm, the possible upside, and the risks.

Same host, same plan, separate fingerprints. Here’s how I set up hosting for my twin-site SEO test so speed and site networks don’t skew the results.
One short email when a test finishes, with the real numbers, even when the answer is “nothing happened.”