The Trump campaign’s June fundraising totals sparked some hope in GOP circles that the presumptive Republican nominee could start closing the money gap with Hillary Clinton and turn his most fervent supporters into reliable online small donors.

But Trump’s initial foray into email fundraising hasn’t gone quite as planned, and now one of the platforms that was working with the campaign has cut off service.

Late last month, the campaign emailed its entire list for the first time with a fundraising pitch. That email made headlines for reaching Icelandic, Australian, British and Scottish legislators and its high spam rate. Nearly four-in-five emails were caught by spam filters, according to Return Path. “Almost 60 percent of the fundraiser emails from Trump never reached inboxes.”

Since that time, industry estimates have the Trump campaign sending between 30-50 million emails, at times with miserable results.