Extract email addresses from text
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Hello everyone!
Does anyone have a script (or know how to create one) that extracts email addresses from a text string?
Thanks in advance! Gustav
1 Comment
Steven Lord
on 9 Jun 2017
It's likely more complicated than you think. See for example this Microsoft blog and this Stack Overflow question. One of the answers on the Stack Overflow page links to a (five year old) page giving a regular expression that I suspect you could use with the regular expression functionality in MATLAB.
Answers (2)
Stephen23
on 8 Jun 2017
Edited: Stephen23
on 2 Jun 2021
email = '[a-z_]+@[a-z]+\.(com|net)';
and adapt it to allow any domain, or whatever other requirements you have:
rgx = '[a-z0-9_]+@[a-z0-9]+(\.[a-z0-9]+)+';
C = regexpi(txt,rgx,'match');
For a slightly stricter version, you can find many regular expressions on the internet, e.g.:
rgx = '[a-z0-9._%+-]+@[a-z0-9-]+(\.[a-z0-9-]+)+'
While this simple regular expression works for simple email adresses, it is worth noting that the complete rules for checking valid email adresses are not trivial to implement with a regular expression:
A common mistake (including by this answer) is to exclude non-latin characters.
2 Comments
oliver
on 15 Feb 2019
Edited: oliver
on 15 Feb 2019
I think the above examples will miss quite a lot of emails, like all those containing a capital letter or things like: Peter.O'Toole@xyz.com. So my suggestion would be something like:
reg='[a-zA-Z0-9._%''+-]+@([a-zA-Z0-9._-])+\.([a-zA-Z]{2,4})';
Although with the wide variety of new TLDs nowadays, limiting the last character group to 2-4 letters may be obsolete (depending on your needs).
1 Comment
Daniele Lupo
on 2 Jun 2021
This regexp validates an invalid mail with consecutive dots, like "my.email@email...com".
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