[Smartass]

From the dictionary:

Adjective: alright

1. All right (nonstandard usage)

Adverb: alright

1. Without doubt (used to reinforce an assertion)

2. An expression of agreement normally occurring at the beginning of a sentence.

3. In a satisfactory or adequate manner.

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Adjective: all right

1. Being satisfactory or in satisfactory condition

"the passengers were shaken up but are all right"; "is everything all right?"

Adverb: all right

1. An expression of agreement normally occurring at the beginning of a sentence.

2. Without doubt (used to reinforce an assertion) "it's expensive all right"

3. In a satisfactory or adequate manner "held up all right under pressure"

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No argument. Irregardless, you'll know what was inent asnd meant.
I guess it all boils down to a person's habit, style and usage.

[B4Ranch]

Myself I prefer 'awright'.

[Larousse2]

I use Merriam's Webster's II.