Guaranteeing the reputation of your sending server is essential in order to ensure good https://www.service-societe.com
deliverability of your newsletters. This is all the more true in the case of prospecting http://buzztum.com
emailing campaigns where the danger is increased of sending invalid , temporary or Spam Trap type emails .
In the case of purchases or exchanges of files, it is also strongly recommended, not to say mandatory, to have this type of email list checked before using them, otherwise your IPs will be blacklisted .
Control your new users through email confirmation by checking if their email address is temporary. Generally this type of email is used by undesirable or suspicious customers.
An email valid today might not be valid tomorrow. A business email list will degrade 5-10 % per year compared to 25% per year for an individual email list. It is therefore essential to have your mailing lists checked regularly so that you never end up with an invalidity rate greater than 5% , knowing that the more you tend towards 0% , the better your deliverability will be.