Mailshake

I love their Drip campaigns functionality
Love the Zapier integration as it allows me to connect Google sheets with Mailshake
Love the automatic review of your content

The need to upload a subscriber list for every new campaign. Need a central repository of subscribers where we can tag them based on campaigns.

The fact that we can set up several email accounts, and set up in advance all the scenario. This makes a huge difference, and the interface is easy to use.

The analytics bit is a bit light in my opinion. The replies are not always concordant.

The interface is very good and it is intuitive to use.

Only issue was list segmentation and dealing with sending to existing lists we'd try and import. When we import a cleaned list we spent time putting together, we'd still run into issues with scheduling our sends. This led us to canceling.

For starters, it's super easy to use. No hassle figuring things out or configuring workflows - it's easy to start sending emails.

It also has pretty much every feature I'd need. Followups, link tracking, merging. Pretty much anything you'd need for a cold email outreach campaign.

Finally, Zapier integration. Need I say more?

It's not a fancy UI, but it easily connects with my Google Apps/Gmail account to send personalized outreach emails that actually look personal, especially including automatic follow up based on different triggers (i.e. the prospect did or did not open, click, or reply).

The best part is that they have lots of training and ideas on how to write cold emails that don't seem spammy or stupid. Really well done platform to grow your business the simple, grassroots way.

The feature that SHOULD be there, but isn't... is cloning a campaign. If you have a successful campaign with one list of prospects, and you want to run it again... or use it as a foundation for a new cold outreach campaign, you can't clone it! Definitely my biggest pet peeve!