AbuseBox is a free, open-source tool that checks IP addresses and domains against 60 DNS blacklists, pulls reputation scores from AbuseIPDB, inspects DNS, SSL and email-authentication records, and sends an alert when something changes. A DNS blacklist, or DNSBL, is a…
The uncovered operation involves the manipulation of thousands of hijacked sub-domains belonging to or affiliated with big brands. Complex DNS manipulations for these domains allowed the dispatch of vast quantities of spammy and just outright malicious emails, falsely authorized under…
In February 2024 Guardio Labs published a report on a spam operation they called SubdoMailing. One of their examples was mail sent from marthastewart.msn.com. It passed SPF. It passed DMARC. It was sent from a server in Kyiv that…
"Just checking in" is the email customers learn to skip. It asks for their time and gives them nothing back, so after the second or third one they stop opening it. The problem usually isn't the wording. It's that the…
Disclosure up front: I build Mailward, a browser-based PST/OST/OLM/MBOX/EML viewer. These are the implementation notes. A PST file is not a folder of emails. It is a single-file B-tree database — Microsoft documents the layout as [MS-PST]…
The integration constraint changes the answer. If an e-commerce service already has a mail provider, keep it and add the smallest possible welcome-email path. If the application is assembling several backend capabilities behind one account, a plain REST surface with…
An OTP proves you can read a code sent to you. A passkey proves you hold a key made for this one website, unlocked by your fingerprint or screen lock. That difference is why passkeys are replacing codes for sign-in.
Sending sensitive information in attachments is inherently unsafe, and the main way to secure them -- encryption -- can be implemented inconsistently, negating security benefits. Sending sensitive information securely in an email or as an attachment is possible, but enabling encryption to…
You can encrypt an email in Outlook to protect confidential information beyond the connection between email providers. With a qualifying Microsoft 365 subscription, you can send an encrypted email or apply restrictions that stop recipients from forwarding it. The setting you…
Disclosure: I build and sell a paid Apify Actor that automates this workflow. It's mentioned at the end as one option. Everything else here works with free tools. This article was drafted with AI assistance; the code was tested on…
SMS/RCS, chat apps, email deliverability, and customer communications platforms.
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