Yes, they support SMTP and IMAP just fine. In fact, they're one of the few providers that actually support IMAP push with iOS's Mail: https://blog.fastmail.com/2016/12/21/what-we-talk-about-when...
Re:The FastMail Security Mindset
by ocdtrekkie on Tuesday December 05, 2017 @02:18PM
(#15854800)
This is the best part of a standards-compliant service like FastMail. Gmail is extremely challenging to use with third party clients because it's custom features aren't supported. I've long had Gmail randomly archive (in no folders) email I told it to delete via an IMAP client, or duplicate items in multiple folders (i.e. labels) or other weird behaviors.
> But FastMail supports other clients, right? I don't want to be forced to use their web interface or their app; I'm happy with the Apple-written Mail apps.
It does, but at least for me the problem is using my separate forwarding-only e-mail address instead of fastmail.com as the sender. As far as I see, I need the native app for this.
Re:The FastMail Security Mindset
by brongondwana on Tuesday December 05, 2017 @08:22PM
(#15857760)
FastMail.com can send via a forwarding email address. You'll need to set up authentication at FastMail so it can authenticate to the forwarding service of course.
I don't use the forwarding service to send. I use it to forward incoming mail to FastMail, and in FastMail I just fake the sender address when sending e-mail.
Re:The FastMail Security Mindset
by brongondwana on Wednesday December 06, 2017 @08:21AM
(#15860848)
Sadly your use-case is dying. Asymmetric mail flows are becoming harder and harder to support, as DKIM/DMARC alignment and SPF become stronger anti-spam signals, we're going to have to lock down on egress for domains which we don't have proof of control for.
But FastMail supports other clients, right? I don't want to be forced to use their web interface or their app; I'm happy with the Apple-written Mail apps.