Inthemail

2 clues
Like the check, often
On its way (or so they say)
Similar answers:
Abenchinthepark
Abirdinthehand
Abirdinthesand
Absinth
Absinthe
Absintheminded
Acafeinthecrowd
Aceinthehole
Aceinthehull
Acryinthedark
Actintheplaceof
Adayinthe
Adayinthelife
Adayintheussr
Adeathinthe
Adivinityinthat
Adjointheclub
Adoginthemanger
Adroopinthebucket
Adropintheocean