Mailshake
Plans that cap mailboxes (1, 2 or 10), include warm-up, add a phone dialer on the top plan, and have no free trial.
What the vendor says: An Agency plan with unlimited email addresses; price not listed
Saleshandy
Prospect-and-volume pricing with unlimited email accounts, warm-up and API access on every self-serve plan, and a 7-day trial.
What the vendor says: White-label only on the custom-priced Enterprise tier
Smartlead
A sending platform with unlimited email accounts on every plan and paid client workspaces, which makes it a common pick for agencies.
What the vendor says: Client workspaces at $29 a month each; 3 included on Unlimited Prime
Woodpecker
Outreach tool priced by emails sent, with unlimited email accounts, three warm-ups included and LinkedIn on the Multichannel plan.
What the vendor says: Agency Panel is an add-on
Not verified
We couldn’t confirm this from the vendor’s pages for these tools. That isn’t a no.