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What is the full form of RB?

Full form of RB: Here, we are going to learn what does RB stands for? RB – which is an abbreviation of "Reply By" in Email jargon, etc. By Anushree Goswami Last updated : April 1, 2024

RB: Reply By

RB is an abbreviation of "Reply By".

It is an expression, which is commonly used in the Gmail platform. It is written in the body or the subject of the email to tell the recipient that the reply is required for the email within a certain deadline. It is done to inform the recipient that the email is not only to just be read by him/her but also a reply is necessary for the same within the provided deadline by the sender. If it is written in the email RB, it means that the recipient is required to reply to the email of the sender necessarily in that particular deadline.

Reply By (RB) Example

Let us take an example to make it easy to understand.

In an email, if it is written:
PFA edited manuscript. Check for corrections. RB+5.

This shows that the email has a document attached to it and it does require the reply from the recipient within 5 days.

RB as a Replacement for Reply By

Now, these days, the demands of acronyms are very high on social media online chatting or messaging, so the users usually use RB as a replacement for Reply By.

So, in this way, the abbreviation RB is used mostly on the social media platform.

While this slang is very common in social media platforms, mainly email messaging, still many are unaware of this slang.

RB Instead of Writing Reply By

So, basically in emails if you want to inform the recipient that the reply is necessary for a particular email within the particular deadline, you can simply write RB instead of writing Reply By. Writing RB seems professional and easily understandable as well.