Accept '+' in emails
Gmail and many new email providers provide users to have multiple emails to filter and track spam. Example in Gmail, all the following mails will reach in same inbox:
bill.gates@gmail.com
billgates@gmail.com
billgates+feedback@gmail.com
billgates+feedspot@gmail.com
Currently, while registering a new account on Feedspot, it shows validation error if the email field has a + sign. It might deter a few tech savvy people from registering on site.
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Peter Groft commented
Append a plus ("+") sign and any combination of words or numbers after your email address. For example, if your name was hikingfan@gmail_com, you could send mail to hikingfan+friends@gmaiI_com or hikingfan+mailinglists@gmail_com. Insert one or several dots (".") anywhere in your email address.
Hope You Find This Useful,
Peter