Campaign Monitor might be a bit more popular than Sanebox. We know about 1 link to it since March 2021 and only 1 link to Sanebox. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I see no specific issue with sanebox.com, however it appears that they are only offering a service you can do on your own. Honestly, do you really get that much SPAM? Source: over 1 year ago
According to campaignmonitor, the Return on investment in email marketing is 4400%. This implies a $44 return on every $1 spent. Also according to Direct Marketing Association, 66% of consumers have made a purchase online due to an email marketing message they have received in the past. Source: almost 2 years ago
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