MasterBase tries to help you improve email marketing campaign performance, boost deliverability and lower costs.
https://www.en.masterbase.com/
Email Hosting Providers · Marketing Platform
Get access to data on 4,371 websites that are MasterBase Customers. We know of 2,171 live websites using MasterBase and an additional 2,200 sites that used MasterBase historically and 393 websites in the United States.
Get a list of 4,371 websites using MasterBase which includes location information, hosting data, contact details, 2,171 currently live websites and an additional 2,171 domains that redirect to sites in this list. 2,200 sites that used this technology previouslyand 393 websites in the United States currently using MasterBase.
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These are sites that we think might use MasterBase in the future because of their similarity to other sites that already do.