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How blacklists don’t work

Oh, how I love tossing an IP into multirbl.valli.org, a true one-stop-shop to instantly check “all the things.” But I also see a lot of people freak out when they see the results realizing, “My IP is blacklisted!!!”

At this point, I usually step away from my laptop, grab a cup of tea, listen to a clip of the ocean, and ask my sister to text me the story about a kid who knocked her glasses off in gym class resulting in a seemingly endless “Velma Moment.”

That’s because there’s just so many blacklists in existence, primarily because there are no requirements to start one. Anyone with a computer connected to the internet can create a public blacklist, and as a result, not all of them are useful or apply to the messages you send.

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My file is not small, it’s fun-sized!

Your message file size matters. Some may think it’s great to send a ton of content in one fell swoop, but most ESPs limit the size of the message you can send through their service. That’s likely because they’re sending bulk messages, so they have to keep an eye on the processing power and time it takes to send a lot of very large messages at once.

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Feature announcement: more useful weekly account digests

We know from our open rates and follow-up questions that users rely heavily on the information in the email we send every Monday morning with statistics of selected servers. This weekly digest emails have always been useful, but we knew they could be better. So starting next week, you’ll see a new design and some additional information to help you manage your account better.

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