Spam traps are addresses that exist to catch senders who mail people who never opted in. Here is what the three types are, how they reach your list, and eight ways to keep them off it.
Aug 05, 2026
A hard bounce is permanent, a soft bounce is temporary - and the difference decides whether your next campaign reaches the inbox. Here is what causes each one and how to stop both.
Aug 04, 2026
A practical guide to shrinking photos for upload limits, email and the web - which format to choose, why resizing beats the quality slider, and how to check nothing visible was lost.
Aug 01, 2026
Combine several PDFs into one file straight from your browser — free, with no software to install and no account required. Step-by-step instructions, page-order tips and what to check before you hit send.
Jul 30, 2026
A practical workflow for cleaning and verifying an email list before a campaign: dedupe, fix typos, remove role accounts and check every address that remains.
Jul 28, 2026
Four technical checks tell you whether an email address can actually receive mail. Here is how to run all of them in one click, free, without sending anything.
Jul 27, 2026
