There are a few things that can have a big impact on your bounce rate. Here are some questions you'll want to ask yourself to help determine the cause of a high bounce rate:
Was my list formatted correctly before it was uploaded?
If your list is not set up properly in your .txt, .csv or .xls file prior to being uploaded
into Benchmark Email, then you may see most, if not all, of your contacts return as "bounces." Check to ensure that domain names are spelled correctly and that each email address is separated into one contact each. There are times when email addresses have quotation marks on one side of the address but not on the other ("firstname.lastname@example.org), causing the file to try and squeeze everything on that line into one column. If you find this to be your trouble, a quick search online can help give you tips to resolve your file.
Is my list permission-based?
Have you used this list before or is this the first time? If, during the first mailing to the list, you notice several addresses returning as "bounces," it may be due to how the addresses were collected. If your list was compiled from several different sources without verification that the addresses were valid, it could be that several of the contacts are fake and only placed on a list that is sold, rented or harvested. To avoid a high bounce rate, and to stay within the restrictions placed by Benchmark Email in relation to contact lists, please review what it means to have a permission-based
How old is my list?
One reason email addresses bounce is because they are no longer valid. It may be that the contacts on your list have since closed down those email addresses and moved on to newer ones. If this is the case, there isn't much you can do. Those contacts are no longer active, and have become unreachable. Staying in regular contact with your subscribers will help keep you fresh in their thoughts. If you do this correctly, without oversending or annoying your subscribers with irrelevant contact, then when they do change email addresses, they will remember to sign up their new address with your company or business.