Constant Contact does impose limits on the number of contacts a user can have, but these limits can differ based on the specific plan one selects. Generally, the pricing tiers are structured around varying maximums for contact counts, so higher-tier plans typically accommodate larger lists. For instance, a basic plan might support a smaller number of contacts, while premium plans can permit tens of thousands or even more. It is important for users to assess their individual needs and choose a plan that aligns with their contact management requirements. Users should regularly evaluate their lists to remove inactive or duplicate contacts, as this can also assist in staying within the limits of their chosen plan. For the latest information regarding specific contact limits, it is advisable to check the official Constant Contact website, as they regularly update their offerings and policies.