![]() ![]() The underscore character (_) is a valid character in URLs and can be used as part of the path or filename of an address. This means it’s best to avoid using them when signing up for a new account or sending a message for the first time unless you know the provider supports this character without any issues. It is important to note though that while you might have an underscore included in your address at sign-up time with these providers, they don’t guarantee that all sent emails will arrive properly if they contain underscores.Īnother point worth considering is that some servers may strip out underscores from incoming emails before delivery making them impossible to retrieve even if received successfully by the recipient’s inbox. That being said, you will still find plenty of smaller providers that allow underscores in emails – for instance ProtonMail and ConvertKit both permit their users to include them in their addresses. ![]() ![]() In addition, some services may place restrictions on which characters can be used in your username or address in general, meaning you may have trouble creating an address with underscores if it’s not supported. For example, many large providers like Gmail, Yahoo and Hotmail do not allow email addresses to contain underscores. However, usage of underscores differs from one email provider to the next. Generally speaking, underscores are allowed in email addresses. It can be used to join words (e.g., "a_b"), create emphasis (e.g., "a_b_c"), or indicate a space (e.g., "a_ b"). When can I use underscores in email addresses?įirst off, the underscore is a versatile punctuation mark that can be used in a variety of ways. ![]()
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