Postal: Open source mail delivery platform, alternative to Mailgun or Sendgrid

Re:Postal: Open source mail delivery platform, alternative t... by lucaspiller on Friday April 28, 2017 @02:06AM (#14217178)

I've been doing this for 6 months now, and haven't had any issues. Over the last 7 days my deliverability of 64k emails has been 99.5%. The only bounces I have are because of invalid email addresses or mailboxes being full. I didn't do any 'warming up' of the IP when started, I just started sending.

I've heard this many times, and maybe it was true before but it doesn't seem to be any more. I suspect now companies like Sendgrid still spread this FUD so people are more willing to buy their services and assume it's the only option.

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Re:Postal: Open source mail delivery platform, alternative t... by jjeaff on Tuesday May 02, 2017 @04:04AM (#14244744)

I'm curious to know what type of customer you have? My customer base is made up of quite a few less tech-savvy types and we get a lot of issues with spam for AOL and MSN accounts.

And I don't show any bounces either. Stuff getting sent to spam doesn't give you a bounce message usually. It will appear to have been delivered successfully.

As for needing to warm up the IP, I think there is still something to that. I am surprised you were able to just start right off sending large volume. My guess would be that that you lucked out and got a gently used IP address by chance. The fact that it was on a blacklist would indicate that it probably was previously used rather heavily... just enough to get blacklisted at one place. But not abused in a way that got it blacklisted other places.

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