A process though which a mail server can perform multiple concurrent deliveries to different domains, which greatly speeds up the delivery of large volumes of email.
![Searching on websites](https://cdn.igeniushost.com/sendoffice/images/searching-on-websites-wpp1671216134890-754x583.jpg.webp)
Building and managing an opt in list for a website
Building and managing an opt in list for a website provides a seller direct access to a wide number of potential customers. Building and managing