Category: Email Marketing
In a contact list, there can be all kinds of email addresses, just as in an inbox, you can find very different senders. However, they all have the same anatomy to standardize them and allow the exchange of information between mail servers. It is a factor that influences deliverability, hence the importance of knowing how it is constructed to avoid mistakes.
On a personal level, choosing an email address is something we do without much thought, unless it's already in use by someone else, and then creativity kicks in. But in a business, the same system is always used to choose them, which helps users identify them as trustworthy.
Whether it's a personal or professional account, from here or there, in one language or another, an email address always has two parts, separated by the @ symbol:
Each address is unique, and there cannot be two identical ones in the same domain. You should know that there is no distinction between uppercase and lowercase letters in any part of the address, so you can use them to facilitate readability, but it will arrive the same if you put FirstName@ or firstname@. In fact, Gmail also does not distinguish dots when creating the user, so it interprets that FirstName.LastName@GMail.com and firstname.lastname@example.org are the same person.
This is not the case on mail servers used by companies, so you have to be careful when choosing the address so that it is not considered as spam, meaning that messages pass the filter and do not go to the spam folder.
Let's give several examples to explain why the sender's email address affects deliverability.
Would you trust someone who sends you emails with these usernames? Neither you nor your email manager. Although the message will arrive because the address exists and works, it is likely to be considered spam and not land in the inbox.
For choosing the user, companies usually follow the same style, like the department's name or the person's name. It's common and conveys security. Encountering a "do.not.reply" or anything that suggests promotional content is more likely to make the sender untrustworthy.
For this reason, you should always send using corporate domains that can be easily identified as official and not created for spam or phishing. Thus, email@example.com might be useful internally but not for email marketing.
If you're considering which addresses to allow in your list or whether you should clean those that seem suspicious, the solution to your doubts lies in double opt-in: the account was verified twice, so it exists and is operational. Why not consider it valid?
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