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SMTP2GO updates & email deliverability tips from helping over 35,000 companies deliver better email.
We have recently discovered that T-Mobile has changed its policy regarding SMTP servers (as of May 1st, 2010) and now requires that SMTP authentication be used. What does this mean? It means that you must enter an SMTP username and an SMTP password in your email settings if you want to be able to send […]
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