SendGrid could be one of the options for restaurant business owners because it sends emails to almost 15 billion customers every month to drive engagement. Small business owners and reputed multinational companies like Walmart, Airbnb, Uber, Spotify, Pinterest, Hubspot, Foursquare, etc., are using SendGrid because it can manage huge volumes of emails.
5. GetResponse
A cheerful person with curly hair promotes an online marketing platform, highlighting features like email marketing and conversion funnels.
GetResponse is a popular source that has beautiful and mobile-responsive email newsletter templates. GetResponse offers bulk email marketing services; you can also add social media profile buttons, links, YouTube videos, and much more to make your email more professional and catchy.

Earlier, GetResponse was popular in European countries only, but now it operates in more than 180 countries and helps almost three lac plus small and large scale companies. Well-known corporations such as Marriott, Blueman group, and Glaxo Smith use GetResponse to find new buyers.
6. Colorlib