Will your customers know by looking at the links if it is official?
If you are using unbranded URL shorteners, then yes.
Extra cautious users would like to enter the URL by hand instead of clicking on the link. Mnemonic URLs are something users can type by hand easily and also commit to memory for the future.
Safety cautious customers prefer to type the links instead of clicking on them. Are your shortened URLs optimized for typing? Are the URLs Mnemonic?
URLs work regardless of capitalization; /Mfa, /MFA, and /mfa are treated the same.
Handles similar-looking characters seamlessly, such as (/T0T is same as TOT, and BIT same as BlT).
URLs are concise, with only a few characters, unless deliberately expanded using dictionary words.
3u.gg offers Mnemonic short URLs. Fully branded plans start at $24.99 and will let you choose your initials like fnb.3u.gg/xyz for First National Bank.
All URLs are mnemonic by design always. Once you reserve the domain of your choice, you have the full space available to choose and make your ‘corporate links strategy’.