Reasons to not use your own domain for email
DO use a your own domain. Advantages far outweigh the disadvantages. 
Instead of being at the mercy of whatever email provider you choose, you&#x27;re free to move your domain where ever you want, without updating &quot;a million&quot; senders.<p>DO NOT host your own email server though. A couple of decades ago it made perfect sense to do so, but these days it&#x27;s simply not worth the trouble.
Instead use Google&#x2F;Outlook&#x2F;Apple&#x2F;Whatever to host your custom domain and use their offerings with your custom domain.<p>My personal domain is hosted by mxroute.com, which has served me well for a lot of years by now. Unlimited email accounts and the only restriction is storage, which i can upgrade. Very little downtime (none i&#x27;ve noticed).<p>All that&#x27;s left is to make a backup with regular intervals, which i to do a small local machine using imapsync, which then in turn makes backups of the emails (and regular data) to a local drive and a cloud backup.