I use duocircle.com, allows.dkim and spf. 1,000 per month for free. Gives a warning at 800 and 900 - helpful when I have a process run a little amok.
this post was submitted on 19 Nov 2023
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A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.
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Dedicated Gmail account.
Nothing at all.
I selfhost ntfy and services that only support email for notifications send them to ntfy smtp, then ntfy turns them into a push notification.
I just checked the docs and didn't see anything about ntfy accepting smtp? This would be useful, what am I missing?
I was using mailgun, but they recently fucked me, so I switched everything to Brevo.
Seconding everyone suggesting to just use a Gmail account.
But to add to that, I created a small VM running Postfix that is an open relay that sends mail via that Gmail account. This way, I can use the Postfix VM as the SMTP server for all the other services and I don't have to remember and sprinkle that Gmail password all over the place.
Postfix's main.cf can be secured by configuring it to route all mail through that Gmail account, overwrite the 'from' address, and restrict the 'to' field to send only to myself and no other recipients. Then it doesn't matter what the 'from' of the various self-hosted services are, Postfix transforms the headers into something appropriate and sends it to Gmail to be delivered.
.test internal domain, own postfix SMTP+dovecot IMAP server.
The IMAP server is accessible from WAN via IMAPS (HAproxy+SSL/letsencrypt certificate).
As per securing against brute force attacks:
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Dovecot has a listener process configured to talk the HAproxy's specific PROXY protocol which passes the original client IP to Dovecot, so the latter can apply its own authentication penalty algorithm
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Crowdsec is installed with the HAproxy plugin, so client IPs can also be banned after authentication errors, albeit I'm not sure this works with HAproxy's PROXY protocol
Check if your ISP has an SMTP service. I use mine for alerting when stuff breaks and haven't had any issues. If you use your own domain name and have trouble with delivery, you could try setting up SPF.
Sendgrid, Sparkpost, SES, plain gmail.
If you're only sending emails to yourself, gmail works well with no cost.
Emails? Emails? I don't need no stinkin' emails.
Apologies to treasure of the sierra madres.