[porker]

> We send hundreds of thousands of emails every month

With that volume, wouldn't a dedicated Mailgun IP have been worthwhile? You've got enough mail to gain reputation on it, and the flat fee + lower per-email charges could match or be cheaper than Postmark.

Long-time Mailgun user here, but not affiliated with anyone either.

[jdhawk]

Probably not, there are benefits to shared IP Space, in that you can absorb some complaint/spamtrap issues by piggybacking off others reputation. Its almost like Herd Immunity.

[nothing-special]

It may very well be something to try out! I think if we ever have issues with our current setup in the future, this is likely what we'll try next. I really liked MailGun's staff by the way! Raquel, James and Matt were absolute godsends on multiple occasions!

For now though we couldn't possibly be happier and would gladly continue using Postmark even if they dropped the bulk discount rates.

[pricechild]

Amazon SES also support the dedicated ip option?

[snadwich]

Yes, I use dedicated IPs and get 20%-30% deliverability. Same as with Mailchimp, except my list is over 100k

[pricechild]

Eesh, thanks for the data point.