Most good ESPs (Email Service Providers) will give you good list management and are normally very easy to transfer.
For example we (FrogEmail
) can import your address list from csv or excel and will data cleanse and de dupe on the fly during upload. You can create customisable data fields and multiple address books.
Once your list(s) are in our system we auto manage unsubscribes and if required (double/single) opt-in subscriptions.
You can amend individual contact details either on screen or via re-import without the worry of duplicating the record.
You can optionally run your database against our GSL (Global Suppression List) to remove any know hard bounces etc.
Again, most ESPs will offer a free trial - we offer 30 days, no payment details, no obligation free trial. www.frogemail.co.uk/free-trial
If you have any questions, please feel free to ask.