Roman Kozłowski

Text "JOIN" to 12345 and you've already used an SMS keyword. The word you send – JOIN – is the keyword. The number you send it to – 12345 – is the short...

The verification code you last typed into an app or a service probably didn't arrive from that app's own servers. It came from a CPaaS – a communication platform...

Omnichannel customer support connects every channel your customers use – from email, SMS, chat, WhatsApp, phone, to social – into a single, continuous experience....

TL;DR: SMS deliverability is not a single number. It is the ability of a communication system to successfully get text messages to recipients' devices, shaped by...

Every email you send passes through an SMTP server, and every SMTP connection starts with a port number. If you pick the wrong one, your messages may fail with no...

Sending email to a hundred people is fairly easy. Sending it to ten thousand or more and having it actually arrive in their inboxes is a broader infrastructure challenge. A...

A lot of email marketing strategy advice you see reads like it was written for someone who already has a functioning program – segment your list, optimize your...

Your professional email address can show up even before your subject line. In a cold outreach, a support reply, or an invoice, it's the first thing the recipient...

A public 10DLC URL shortener can block your SMS campaign before the first message goes out. In US A2P messaging, public shorteners such as bit.ly or tinyURL can...