CHARLESTON, S.C and WALTHAM, Mass.—Blackbaud, Inc. (Nasdaq: BLKB) and Constant Contact®, Inc. (Nasdaq: CTCT) today announced a strategic partnership agreement that will provide small and growing nonprofits with the tools and training they need to optimize their e-marketing programs. The companies will integrate key products and combine their expertise to develop nonprofit-specific seminars, training, and....