In computer terms, it is a metadata tag , which is preceded by a special character so that the system and the user can quickly identify it.
In recent times, we have seen hashtags being used on services such as Twitter, Facebook and Google+ to highlight a topic that is being discussed in a conversation and make it easier to find.
Without a doubt, the vast majority of users on these networks already know the purpose of a hashtag, or have already used it, both at a common and professional level. However, what use can hashtags have in email marketing ?
Using hashtags in email marketing
Although it is not common, hashtags can be used in email chairman email list marketing within your campaigns, being used as a “ calling ” mechanism. In other words, they can represent an option to make the subject of the message more attractive, an element that is precisely the first opportunity to capture the user's attention.
Example of a subject: It's time for change (Read more)
The Acrelia News platform even points out that hashtags in email marketing can be used to increase the opening rate and attract the recipient's attention in a positive way.
Based on the same study by Acrelia, the subject lines with the highest opening rate are those with 6 to 10 words. By using a hashtag in this composition, we somehow force the subject to consider brevity as one of the most important aspects , thus creating a sense of intrigue for the reader to continue reading what the subject says, creating a personal connection between the brand and the user.
Of course, you should not forget that campaigns must be adapted to the type of audience -target- to which they are directed, because perhaps some -for example, more senile ones- will not be entirely happy with the use of hashtags within the body or subject of the email.

January sales: Prepare your email marketing strategy
Some more data on hashtags
We already shared with you an example of the use of hashtags in email marketing. You should know, however, that in general these:
They are not case sensitive , but so-called CamelCase (or capitalization in a position other than the initial one) is often used to improve readability.
Although hashtags are known thanks to Twitter , they existed long before its creation and have subsequently been incorporated into other web services, even though they were not oriented towards sending short messages.