The Swiss mail service ProtonMail revealed that it does not cash out bitcoins received as payment for its premium services.

ProtonMail tweeted that it keeps storing bitcoins that the mail service had received as payment for its premium services so far.

“No worries, we will HODL for you (we actually don't sell our BTC and haven't for years),” ProtonMail tweeted answering to a tweet from a user who wrote that he was experiencing some inconvenience paying ProtonMail's services in bitcoin, while he should have keep hodling his bitcoins.

ProtonMail began accepting bitcoins in August 2017. Starting with version 3.11 of ProtonMail, service customers received the opportunity to pay for premium secure email accounts using BTC.

“ProtonMail is joining the cryptocurrency revolution, and starting from today, Bitcoin is one of our officially accepted payment methods,” the company wrote.

According to its statement, the ProtonMail team was always interested in cryptocurrencies and blockchain, as they supported the same principles that inspired them to create ProtonMail. “These are the principles of freedom, privacy, and an Internet ecosystem where all have an equal opportunity to thrive, free from many of the artificial constructs that control commerce today.”

In 2014, when ProtonMail was launched, the first community fundraising was frozen by PayPal, leaving the team without access to the funds necessary to run the service.

ProtonMail continues to accept donations in bitcoins. Currently, the company’s wallet received more than 200 BTC, or almost $2 million.