After some advice from the wise and good...
A friend has a gmail address that she uses to send regular emails for a running club. She sends to about 100 people on her mailing list and does it from her Android phone/tablet.
As of yesterday google started to reject the emails on its SMTP server because it considered they may be spam. I've found this but it isn't massively helpful (she is going to try filling in the contact form but I don't expect much to happen from that).
Does anyone know any simple way around this (she isn't the most tech savvy of people)? Is there an android app that allows managing of mail lists via google? I have wondered if I should get her to sign up to a basic hosting package with TSOHost and use their SMTP server - would that work (she still needs to send as her google account rather than wanting a new email address at this point).
Any help appreciated.