All right vs. Alright

‘All right’ or ‘alright’?

Is it acceptable to write alright as one word, rather than two separate ones? For example:

E.g. She calls them whenever she is travelling to assure them she is alright.

Similar ‘ merged ’ words such as altogether and already have been accepted in standard English for a very long time, so there is no logical reason to object to the one- word form alright. Nevertheless , many people dislike it
and regard it as incorrect, so it’s best to avoid using alright in formal writing. Write it as two separate words instead:

E.g. She calls them whenever she is travelling to assure them she is all right.