You can send your documents to Adventure Iran and in the visa application form there is a box for the location that you would like to collect your visa. You should mention that you would like to collect your visa from the following airports:
IKA: Tehran Imam Khomaini Airport
MHD: Mashhad Airport
SYZ: Shiraz Airport
TBZ: Tabriz Airport
ISF: Isfahan Airport
BUZ: Bushehr Airport
KIH: Kish Airport
KSH: Kerman Shah Airport
Note: It is vital to have your visa reference number to collect your Iranian visa
For more information please visit the link below: