Unfortunately, most big mail providers won’t accept email from your self-hosted mail server, even with DKIM, SPF, etc. So, diversifying is as good as it gets.

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immibis 4 days ago | parent [-]

Has this been tested recently? I had no problem sending mail to my own Gmail account from my own server. Even without SPF (then I got a bunch of spam spoof bounces and realized I forgot SPF)

	▲	ryandrake 4 days ago \| parent [-]
		I've been self-hosting E-mail for a long time (which itself probably helps with reputation), and I very rarely have deliverability problems.