Mailtrap worked great with us, giving the ability to send emails to dummy accounts. It's easy to use and integrate into our own services. I do not like how it looks, but that can be changed easily enough with any design tool or editor. The best thing about Mailtrap is the speed at which you are able to set up the account and receive responses. We were able to send thousands of emails to thousands of different dummies in almost no time. Mailtrap let us develop an amazing product very quickly. The best thing I like about this service, it's free! Also you can use multiple domains with just one account (subdomain). You don't need so many accounts for each domain if they have different purposes or applications which makes things easier when managing all emails from our customers in general terms as well because we save time by not having several tools/accounts per customer etc..
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