Mal Warwick Associates, a fund-raising consulting company in Berkeley, Calif., has announced that it intends to acquire Donordigital, a consulting company in San Francisco that specializes in online fund raising.

Last spring Donordigital announced that it was merging with Fenton Communications, a consulting company in New York, a move that was later rescinded, according to a letter Nick Allen, Donordigital’s founder, sent to clients.

“That proved not to be a good fit,” wrote Mr. Allen. “Merging with a direct-response fund-raising firm makes more sense.”

The new alliance is a homecoming of sorts as Donordigital originally started out as a unit of Mal Warwick Associates.

Dan Doyle, who is currently chief executive at Mal Warwick Associates, will also assume that position at Donordigital. Mr. Allen will serve as chief strategy officer.