Mailmeteor is a personalized email campaign tool that helps users manage replies from Gmail, Outlook and other tools.
Alternatives to Boomerang
Boomerang brings email planning and meeting coordination into browser extensions and mobile apps. You can send messages later, snooze an inbox, request read receipts, set follow-up reminders, and pause incoming mail. Meeting Poll collects invitee choices, while Bookable Schedule, Free/Busy sharing, and Suggest Times handle other scheduling tasks. Respondable gives real-time guidance on email actionability and tone. The free Basic plan allows 10 message credits monthly; paid…
FollowUpThen is an email reminder and personal follow-up assistant.
Mixmax is a sales engagement platform for revenue teams that works inside Gmail and Outlook.
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Right Inbox
Right Inbox is a Gmail productivity tool for tracking, scheduling, and automating email.
Free planWebExtensionLinuxmacOS7.9From $9.95 a month - 5

Instantly
Instantly combines cold email automation with a built-in B2B lead database for sales outreach.
AndroidiOSWebAPI7.8From $47 a month - 6

Yesware
Yesware is a sales engagement platform that brings email tracking, templates, and automated outreach into Gmail and Outlook.
Free planWebExtensionmacOSWindows7.3From $19 a month - 7
7.2From $50 a month - 8

Saleshandy
Saleshandy is a multichannel outbound platform for finding leads, contacting prospects, and booking meetings.
AndroidiOSWebAPI7.2From $34 a month - 9

Woodpecker
Woodpecker is a cold email and LinkedIn outreach tool for businesses running outbound campaigns.
WebAPIExtension7.2 - 10

Hunter
Hunter is an email outreach platform for people in marketing, sales, recruiting and other work that involves contacting people by email.
Free planWebAPIExtension7.0From $34 a month - 11
Outplay
Outplay is a sales engagement and automation platform for account research, prospecting, and coaching.
Free planWebExtension6.9From $39 a month - 12

ReplySequence
Free planWebAPI6.9From $29 a month - 13

Snov.io
Snov.io is a lead generation and sales outreach platform for finding prospects, enriching contact data, and running email and LinkedIn campaigns.
WebAPIExtension6.9From $39 a month - 14
Scurry
Scurry turns sales meeting transcripts into personalized, multi-touch follow-up email sequences.
Free planWeb6.8From $79 a month - 15

YAMM
YAMM is a mail merge tool for Gmail and Google Sheets, available as an extension and on the web.
Free planWebExtension6.8From $25 a year - 16

ReachInbox
ReachInbox is an AI-powered cold outreach platform for finding prospects, personalizing email campaigns, and coordinating replies.
Free planWebAPI6.7From $30 a month - 17
Later.io
Later.io schedules email messages to yourself or other people for a future delivery date, and can send recurring reminders about reports, habits, or payments.
Free planWeb6.6From $3.33 a year - 18

lemlist
lemlist is a paid sales engagement platform for finding leads, personalizing outreach, and running campaigns across several channels.
WebAPIExtension6.6From $55 a month - 19

Reply.io
Reply.io is a sales engagement and cold email outreach platform for businesses and sales teams.
WebAPIExtension6.6From $59 a month - 20
SendLater
SendLater is a Windows add-in for Microsoft Outlook that schedules email messages for a chosen time.
Free planWindows6.6Free plan - 21

Smartlead
WebAPI6.6From $39 a month - 22

GMass
GMass sends newsletters, announcements, cold campaigns, and transactional email from inside Gmail through an extension and the web.
WebExtension6.5From $349 a year - 23

QuickMail
WebAPIExtension6.5From $49 a month - 24

SmartReach.io
WebAPIExtension6.5From $29 a month - 25

Overloop
WebAPIExtension6.4From $69 a month - 26

Mailshake
Mailshake is sales engagement software for automating outreach and generating leads.
WebExtension6.3From $25 a month - 27
NuReply
NuReply is an AI-powered B2B cold-email outreach platform for sales teams, founders, and marketers.
WebAPI6.3From $25 a month - 28
Schedule Email
Schedule Email is a Chrome browser extension that lets users schedule messages to send from Gmail at a selected time.
Free planExtension6.3From $4.99 a month - 29
SendEmAll
SendEmAll is an outbound sales platform that brings together B2B lead search, campaign sequencing, and sending infrastructure.
WebAPI6.0From $1.50 a month
