As long as you can afford the bill that SendGrid charges it doesn't matter because the emails will never touch MXRoute.

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MXRoute since 2015, running rock solid. Referred like 5-6 clients/friends and they couldn't be any happier. Referred the last one yesterday (Image)

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Just a quick survey: for all using MXRoute, who are actively using CrossBox?

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Can Gmail be set to retrieve emails from MXroute using POP3, or some other methods?

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I also use MXroute, works great for my needs. Definitely would recommend for anyone looking.

Mailcow with external relay and MXroute

Gmail for the noise, personal site’s email via zoho MXroute.

mxroute as well, so far so good

MXRoute for personal & general smtp use.

mxroute

You can use MXRoute and setup the email accounts individually for each domain thus keeping everything separate, I do the same.

According to this, MXRoute supports it. If it doesn't, BuyShared seems to support it (starting at 8 USD/year), or you can go for NetCup's Groupware, which will be 3 Euro/month.

I already took a look at mxroute but they seem to block the caldav/carddav feature. I would prefer a host in europe. I guess cPanel is the only shared hosting panel which offers the requested feature,

Sanvit sent test mails via SES/MXroute/MailChannels/Postmark to some test accounts I have. Two were are yahoo. One is outlook.com. All arrived in my inbox except for Mailchannels -> outlook.