The Stroke Association has raised £121,000 from a direct mailing that also asked recipients to reveal their experiences of strokes for its first national survey.
Those surveyed were asked to relate whether they have used or valued parts of the charity's work.
The mailing, which was sent to 40,000 existing donors, 40,000 prospective donors, and inserted into 50,000 magazines in February, exceeded its £85,000 target.
The charity has so far received 15,000 completed surveys, which were developed as part of its 'Reaching Out' initiative.
Judy Legg, donor base manager at the association, said: "We are delighted with the results, both financially and in terms of the information we now have relating to people's attitudes and experiences of stroke across the UK."
The charity repeated the mailing to 40,000 prospective donors in May and plans to send survey results to respondents in future fundraising appeals.