Instantly is a major player in cold email, mostly because it offers unlimited sending accounts and built-in warmup. It makes a lot of sense for agencies that run high volume campaigns and don't want to pay per inbox. The platform even has a B2B lead database, so you can find prospects and email them from the same place.
But you might want to look at alternatives if you need multichannel outreach. Instantly is built almost entirely for email. If your sales team needs to mix in LinkedIn messages or phone calls, you will struggle. Some people also point out that you might simply not need unlimited inboxes, meaning you pay for capacity you just don't use.
Here are the best options if Instantly isn't what you need. We picked platforms that offer strong cold email features but add things like massive integrated B2B databases or better multichannel support.