Amazon SESFree plan
by Amazon Web Services
Low-cost email sending on AWS
The page mentions an AWS Free Tier that provides free, hands-on experience with AWS products and services.
From their website
by Microsoft
Outlook email on your domain plus Office apps
Business email via Exchange and Outlook, with Word, Excel and Teams.
Free plan not confirmed.
Public info, not yet checked. We haven't confirmed the price yet; ask the maker to be sure.
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by Amazon Web Services
Low-cost email sending on AWS
The page mentions an AWS Free Tier that provides free, hands-on experience with AWS products and services.
by Google
Business email, calendar and docs on your own domain
The page offers a 14-day trial with no cost for all plans.
by Instantly
Send cold email from many inboxes with warm-up included
The cheapest paid plan is the Growth plan at $47/mo.