Jamieson was also in communication with John Gurie, who went by the name SurrealKey and was sentenced to six years for supplying cocaine.
Jamieson discussed cocaine Gurie had in his possession and its availability for a customer to purchase.
Gurie was detained in April 2020 and a search of his home found cash and a kilo of high purity cocaine.
After the police involvement, Jamieson sent Gurie “financial support.”
Other messages showed Jamieson corresponding with Stephen O’Donnell about collecting money, referred to as “paper”.
O’Donnell has since been jailed for two years after pleading guilty to possession of criminal property.
Prosecutor Michael Macintosh said the messages indicated cash amounting to several hundred thousand pounds was collected.
Jamieson’s messages included him discussing prices for five million etizolam pills and cocaine. He was seen to offer one person a price of £40,000 per kilogram of cocaine, while heroin was listed at £18,000 per kilogram.
He also referenced Dubai and purchasing watches and vehicles, including spending £146,000 on a jeep.
He initially travelled to Dubai from Manchester in February 2020 and returned in May 2020 before heading back to the Arab state in November.
Thomas Ross KC, defending, told the court that the offence was absent of firearms or intimidation which was “different” from similar cases.
Jamieson’s previous convictions included being locked up for eight years in 2009 for supplying cocaine. He was released after four years.
Judge Lord Scott told Jamieson that the sentence was more lenient than it would have been if it had been a drug supply charge.