Alternatives to ColdStack
Compare ColdStack alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to ColdStack in 2026. Compare features, ratings, user reviews, pricing, and more from ColdStack competitors and alternatives in order to make an informed decision for your business.
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1
lemlist
lempire
Personalize cold emails, automate follow-ups, and engage with leads across all channels. lemlist is your sales automation and cold email software in one. From teams of 2 to 200+, lemlist solves every outreach automation challenge. Increase your reply rates by communicating with every prospect on a 1-on-1 level. Write custom intro lines and call-to-actions. Automatically put any screenshot, custom text, or company logos onto images in your emails. Add dynamic landing pages and embed videos. Launch powerful cold email sequences, send follow-ups that don't feel generic, and open more opportunities for your business. Close more deals by engaging with your leads across multiple channels on autopilot. Add cold calls and dial prospects with one click. Include custom tasks and social selling. Sync seamlessly with your team and quickly see at what stage a specific lead is in.Starting Price: $29 per month -
2
InboxKit
InboxKit
InboxKit is the leading cold email infrastructure platform that automates domain and mailbox provisioning at scale. We help cold email agencies, sales teams, and outbound consultancies set up Google Workspace and Microsoft 365 mailboxes in minutes, not hours. Key features include automated DNS configuration, one-click export to 15+ sequencers (Instantly, SmartLead, Lemlist, Reply.io, etc.), real-time deliverability monitoring, and bulk mailbox management. As an official Google Cloud Partner and Microsoft Partner, we provide enterprise-grade infrastructure without the manual setup overhead.Starting Price: $39/month -
3
Smartlead.ai
Smartlead.ai
Smartlead.ai is a sales email automation platform. It can scale your cold emailing with unlimited mailboxes and AI warmups so you always land in your lead's inboxes. You can use unlimited auto-rotating email accounts and AI-optimized sending to boost reply rates. Its multi-channel outreach feature can also scale your outreach across SMS, LinkedIn, Twitter, WhatsApp, and more.Starting Price: $29 per month -
4
Rubedo
Rubedo.ai
Find and pull data such as email addresses, name and phone number from social media platforms and websites. Download unlimited leads ready for prospecting. It is easy. Download the Chrome Extension, and let the tool automate the work for you. Make your customers sending newsletters or cold emails (send emails until recipients reply) by adding their own SMTP provider and IMAP. Track opens, clicks, bounce, unsubscribe, replies and create nice emailing campaigns in plain text or HTML. Convert your visitors into leads. Automatically chat with your visitors and capture data from them. The collected leads information could be sent by email, SMS (mobile number), or directly into a Slack channel. Convert your visitors into leads. Automatically chat with your visitors and capture data from them. You will be able to install a chatbot to capture information from your visitors.Starting Price: $99 per month -
5
GMass
GMass
A mass email service inside of Gmail. Get the highest open rates you've ever seen. Send cold emails with sequences that maximize responses. Send mail merge campaigns with automatic follow-ups. Pull from Google Sheets, not CSV files. Send emails as replies to the last thread with each person. Personalize. Schedule. Track opens, clicks, replies. Validate your list with our built-in verifier to maximize the deliverability. Say goodbye to CSV files. Connect to Google Sheets to send a personalized mass email using any of the columns in your spreadsheet. Use Gmail's powerful search feature to find messages containing recipients to whom you want to email. Then click the Build Email List button, and a Compose window will load containing the email addresses found in those messages. The only mass email service that does this! The easiest way to send cold email sequences in Gmail.Starting Price: $12.95 per month -
6
Reachingly
Reachingly
Reachingly is a modern AI-powered solution for businesses and professionals who need reliable Email marketing tools for scalable, personalized outreach. It works as cold email software and an outbound email software suite, letting you build sequences, schedule sends, and manage campaigns from one dashboard. As a flexible cold email tool and cold email platform, it supports automated follow-ups and behavior-based triggers (opens/replies) to keep conversations moving. Teams use it as email outreach software and an email outreach tool to stay organized, consistent, and compliant across audiences and inboxes. With built-in cold email automation and email automation software features, Reachingly enables automated email outreach for follow-ups, reminders, onboarding, and sales workflows. Deliverability controls and performance analytics help protect sender reputation and optimize timing—making it a dependable cold email campaign tool for long-term growth.Starting Price: $29/month -
7
ColdSire
ColdSire
ColdSire is a cold email infrastructure platform that simplifies the setup and management of domains and email accounts for outreach campaigns. It offers at-cost pricing for over 150 domain TLDs and email providers like Google Workspace and Microsoft 365. It automates the configuration of essential email authentication protocols, including DKIM, DMARC, and SPF, to enhance deliverability. ColdSire provides centralized inbox management and integrates seamlessly with tools like Instantly and SmartLead. Users can plan their infrastructure, costs, and ROI using the platform's cold email calculator, which factors in variables such as email list size, sequence length, campaign duration, and customer lifetime value. Advanced settings allow customization of parameters like the number of email accounts per domain, daily sending limits, and expected conversion rates.Starting Price: $6 per month -
8
ClickReach
ClickReach
Create hyper-personalized cold emails and automate follow-ups that get replies like clockwork. A powerful outbound prospecting automation solution that lets you generate more replies by enabling hyper-personalized one-to-one email messaging at scale. Start hundreds of one-to-one conversations with your email list, making each recipient feel special. Automatically use personalized custom first lines, custom text, and other variables to be unique to each message. Don’t just use one sending account to send hundreds of messages, but take advantage of multiple sending accounts to scale. This will allow you to start more conversations and engage with more leads, acquire new customers and grow revenue faster. Automate conversations across multiple sending accounts. Scale outreach with more outbound touches that get replies. Create and launch effective cold email sequences, and send unlimited follow-ups that are personal, and feel genuine.Starting Price: $37 per month -
9
Za-zu
Za-zu
Za‑zu is the outbound sequencer that growth people actually enjoy, built for a future where smart growth professionals are building, automating, and rigorously testing outbound campaigns. The cold email command center helps teams orchestrate multichannel outreach, with email, calls, and social media, by providing dynamic campaign scheduling, automated follow‑ups, reply detection, conditional logic branches, AB testing, and analytics dashboards. Users can design sequences visually, add personalization tokens, enforce limits to stay compliant, and trigger actions based on replies or prospect behavior. Integrations include popular CRMs, data enrichment tools, and calendars, enabling seamless workflows without spreadsheets. It supports team collaboration with roles, permissions, shared templates, and performance tracking, plus a unified inbox to manage replies and snooze or assign conversations.Starting Price: $99 per month -
10
AutoPitch
AutoPitch
See the full history of an email thread at one place and reply with the needed context. Send personalize cold emails in bulk with mail merge campaign feature. Also, our in-depth analytics show you who is opening your e-mails, who replied, and more. Scale your outreach - you can email 1,000 businesses quickly, but you can do it with real personalization. Sequences are the holy grail of cold emailing. Send personalized follow-ups to improve your response rates. Send thousands of emails in a go without sacrificing personalization. With Autopitch, you can schedule emails too so that you can send emails at a time when they're most likely to be read. Ease of use - manage all your client emails from one account. Autopitch lets you send them on behalf of your clients too (in their name). Autopitch lets you send behavior based auto follow-ups, scheduling your emails at the right time and more.Starting Price: $19 per month -
11
ReplyForce
DemandScience
ReplyForce is your always-free startup starter kit for growing your business. The incredibly easy cold email tool for finding leads, personalizing messages and tracking your outreach efforts. Whether your goal is to get your first users, attract VC funding, or book sales meetings, ReplyForce is the prospecting tool that can help you scale. We support business email addresses using Google Workspace or Outlook 365.Starting Price: Free -
12
PlusVibe
PlusVibe
PlusVibe.ai is an AI-powered cold email automation platform built to streamline the entire outbound outreach process, from inbox warm-up and lead discovery to smart campaign execution and reply management. It helps users automate high-converting cold email sequences with context-aware, personalized messaging and AI-generated icebreakers, reducing manual work and boosting response rates. It includes secure email warm-up features that mimic real human engagement to build sender reputation and avoid spam folders, advanced deliverability optimization with monitoring and IP rotation, and built-in email verification to reduce bounces. Users can enrich prospect data from multiple sources, scrape contacts and company details with one click, and generate tailored outreach using insights pulled from profiles. PlusVibe also consolidates replies across inboxes, enriches them with sentiment and intent data, and automates follow-ups, bounces, and out-of-office responses.Starting Price: $37 per month -
13
Mailshake
Mailshake
Put your email outreach on autopilot. Turn cold prospects into warm leads with automated prospecting outreach via email, social, and phone. Connect with more prospects, book more meetings, and generate more sales. Send personalized cold emails at scale. Engage with prospects via phone and social. Manage it all in one sequence, on one dashboard. Contact thousands of prospects all at once with personalized email campaigns, fully automated follow-ups, maximized deliverability, and proven templates. Connect with prospects everywhere they are. Seamlessly incorporate social media into your email outreach sequence, and power through cold calls with Mailshake Dialer. Monitor opens, clicks, and replies for every email you send, and know which part of your sequence is converting with Mailshake Lead Drivers.Starting Price: $59 per user per month -
14
Icy Leads
Icy Leads
Looking ForBetter Sales Leads? The Icy Leads sales automation suite simplifies your sales processes so you can get back to growing your business. Find unlimited professional contacts. Use our professional email finder to source an endless supply of your ideal prospects & their contact information for cold email outreach. Send unlimited cold email sequences. Send cold email sequences directly inside of our dashboard. Attach your SMTP email account to send from your own server. Set delays for when follow-ups are sent on no reply. Personalize your emails with dynamic tags. Send Linkedin connection requests on autopilot. Auto-visit and auto-connect with lists of your ideal prospects directly inside of Linkedin sales navigator in a matter of minutes. Close deals through one dashboard. Find local business leads in the niche your agency serves. Export the key decision-maker's contact emails (owner, CEO, CMO, etc) and place them in an Icy Leads SEQUENCES campaign to automate your agency. -
15
Tailormails
Tailormails
Tailormails – Your All-In-One Outreach Platform From first contact to final conversion, Tailormails provides everything you need for smarter outreach. Powered by AI, it makes cold emailing faster, more personal, and more effective. Key Features: AI Email Crafting: Turn LinkedIn bios or prospect data into reply-worthy emails with personalized variations and optimized subject lines. Lead Management: A built-in mini-CRM to track prospects from new to converted without leaving the app. Automated Campaigns: Set up multi-step sequences with AI follow-ups to book more meetings effortlessly. AI Inbox: Connect Gmail/Outlook to auto-categorize replies (Interested, Not Interested, Needs Info) and pause campaigns when needed. Bulk Generation: Create dozens of personalized emails at scale from CSV lists. Compliance Assistant: Stay GDPR and CAN-SPAM compliant to improve deliverability.Starting Price: $4.55 -
16
ReachInbox
ReachInbox
ReachInbox is an AI‑powered cold email outreach platform built to help businesses scale campaigns, maximize deliverability, and centralize communication, enabling users to connect unlimited email accounts with automatic DKIM/SPF/DMARC setup, warmup, and auto‑rotation to avoid spam, AI‑driven magic email copy and sequence generation, along with intelligent spintax and AB testing for highly personalized outreach, comprehensive analytics dashboards, and integrated open/link tracking, bounce detection and reputation protection; it offers a unified Onebox inbox for managing replies, auto‑reply detection with conditional logic to pause or trigger follow‑ups, dynamic CC/BCC inclusion capabilities, customizable campaign settings including daily send limits, unsubscribe headers and block‑quote follow‑ups, and variables that auto‑map CSV columns for personalization.Starting Price: $30 per month -
17
Mixmax
Mixmax
Get more replies, book more meetings, and ensure nothing falls through the cracks. Powering fast growing companies that care about customer experience. Win more replies, meetings, and deals with smart messaging. Improve the customer experience and increase team engagement. Know exactly which candidates open your email, and what content they viewed. Increase sales performance, align your reps, and automate busywork. Analyze performance trends and improve process form a bird’s eye view. Open more doors and 10x your productivity without leaving your inbox. Improve CRM hygiene and automate busywork with automatic Salesforce syncing. You'll know as soon as someone opens your message with real-time email tracking & alerts. Know exactly which messages get the most engagement. Compare impact by team, individual, and campaign. Receive alerts on desktop, email or Slack based on the actions you choose.Starting Price: $9.00/month/user -
18
PursueApp
Teknikforce
PursueApp is a cloud-based software application that allows you to create highly personalized cold email marketing campaigns without spending a lot of time. It is a complete cold email marketing solution for agencies and B2B businesses. Its powerful SAAS helps marketers to generate more leads and sales through cold email marketing. Through PursueApp you can easily send your cold emails directly to the inbox and it will never hit the spam folder. Features of PursueApp: * It is an easy-to-use, newbie friendly software. * In-built ready-to-use templates to save time and efforts * In-built email verification and cleaning system * Provides option of sending bulk mails * GDPR and PECR compliance to keep your business safe. * Fully automated cold email campaigns * Send cold emails through Gmail, Gsuite, Outlook, Exchange or SMTP * Supports import of leads using CSV files * Provides training to help you do cold emailing correctly. * It is an easy-to-use, newbie friendly softwareStarting Price: $67/year -
19
Salesforge
Salesforge
Salesforge is an all-in-one sales execution super app that gives every sales team the highest probability to hit their target by tackling email deliverability and the need to personalize cold email outreach at scale. We do that by enabling real-time AI & machine learning to decision critical sales activities, enhance messaging and eliminate the need for various sales point solutions, therefore driving superior conversion rates. Agent Frank is a cutting-edge AI-powered Sales Development Representative (SDR) designed to streamline and automate your sales prospecting process. From lead generation to meeting bookings, Agent Frank takes care of everything, enabling your sales team to focus on closing deals. The platform allows for full customization, ensuring that Frank aligns perfectly with your business needs, with features like Auto-Pilot and Co-Pilot modes, multi-language support, and a shared Slack channel for real-time updates.Starting Price: $44 per month -
20
Woodpecker
Woodpecker
Start meaningful B2B relationships. Reach out and follow up across channels with an intuitive cold email tool. Always feel confident about your deliverability. Unique algorithm based on human behavior delivers 100% messages to the main inbox. Send only to verified email addresses – automatically checked in real time. Send personalized messages people will appreciate. Follow up using the best channel. Measure campaign’s success automatically. Our AI-powered system analyzes the replies and shows how many of them were positive. Get a clear picture of how effective your strategy is.Starting Price: $59 per month -
21
Lyne.ai
Lyne.ai
Lyne offers AI-powered sales personalization for ambitious growth professionals. The benefit of Lyne is simple. Take one of the longest, most time-consuming steps of your workflow and automate it. Made by cold email professionals in the trenches, we know what your day-to-day looks like. We’re here to make it easier. We leverage AI and Machine Learning to uncover information the average sales rep wouldn’t be able to find, giving your more ammo than the competition. Leveraging AI will put you ahead of the competition and will allow you to hit your quota faster than ever before. Get started with Lyne to 10x your cold outreach efficiency. Save hours SDRs spend in researching, achieve more every day, and halve your prospecting tech stack. Get 100’s personalized cold email intros in 1 click. Built by cold email professionals, for you. Send personalized cold emails at scale. Automate the tedious and time-consuming process of researching accounts and contacts.Starting Price: $120 per month -
22
Zapmail
Zapmail
Zapmail is a cold email infrastructure tool that simplifies the setup and management of Google Workspace mailboxes for high-volume outreach. It automates domain and mailbox creation, manages SPF, DKIM, and DMARC configurations, and ensures high deliverability, making it an ideal solution for agencies and freelancers running cold email campaigns. Zapmail offers features such as automated mailbox and domain setup, Google Workspace integration at discounted rates, bulk exports to cold email tools like Instantly and ReachInbox, AI-powered deliverability optimization, and API access with DNS management. With Zapmail, users can easily purchase Google Workspace email accounts at reasonable prices, schedule and send campaigns from unlimited accounts while keeping their domain reputation safe, and manage everything in one place to boost outreach performance.Starting Price: $2.50 per month -
23
Nureply
Nureply
Your product or service may be good but your empty sales pipeline isn't doing you any favors. Wouldn't it be great if you could get 200% more replies on your emails AND spend just 2 hours a week managing your campaign? Every single personalized email is written using publicly available data - LinkedIn profiles, websites, blogs, you name it. These emails started off being human-written. After seeing the success first-hand, we trained the AI model on these human-written emails across 1 billion parameters. This means you get the best of both human and artificial intelligence in your cold emails. Create your email campaigns and schedule follow-ups months in advance. Use Nureply's human-powered AI to continually test and iterate on your campaign's performance. Optimize for KPIs that matter most like high open rates, response rates, click-through rates and more. It's like having a sales-team in your back pocket.Starting Price: $99 per month -
24
Reply
Reply
Reply.io helps sales teams book more meetings and close deals faster with AI-powered, multichannel outreach. It is your all-in-one sales engagement platform that automates outreach, finds leads, and turns them into booked meetings. Reply’s built for sales teams, founders, and agencies who want to grow their pipeline without the manual grind. Just plug in your strategy → Reply handles the rest. Key features: - AI SDR that works for you; - Built-in B2B database; - Multichannel outreach; - Findy Chrome Extension; - AI-powered personalization; - Email Deliverability Suite. What makes Reply different: - Your own AI SDR that doesn’t just automate, It actually learns your product and adapts your outreach. - Whitelabel available. Perfect for agencies that want to offer a branded solution. - Agency Growth Hub. Purpose-built tools for lead gen agencies: dashboard, API, client management, bulk actions.Starting Price: $49/user/month -
25
Wavo
Wavo
Wavo empowers Agencies, SaaS, and 3PLs to accelerate sales growth by accessing untapped e-commerce leads. With over 1.4 million verified decision-makers in the USA updated monthly, we offer the industry’s largest real-time e-commerce contact database. Utilizing proprietary web crawling and public records, Wavo provides 80% greater market coverage than generic databases. This gives you a competitive edge by connecting with prospects your competitors can’t find. Our integration with OpenAI’s ChatGPT enables you to craft highly personalized emails at scale, resulting in 3x more replies compared to standard cold email platforms. Wavo’s built-in email warmup and deliverability framework boosts your deliverability by 88%, reducing spam complaints and increasing open rates. Start today with 50 free high-quality leads and all the tools you need to turn them into sales opportunities. Visit us at wavo.co to unlock your sales potential. -
26
Emelia
Emelia
Your cold emailing is better than ever! With an intuitive platform, detailed analytics and exclusive features. Writing an effective cold email is a crucial step in email prospecting. Also known as cold mailing, it's a prospecting technique that fits into a company's business strategy and aims to generate new leads. Writing a cold email is a unique exercise. You can't write to 10,000 people in the same way. You're likely to fail. This is where personalization comes in. The more personalized your email, the less your recipients will feel spammed. Your name and email address should be professional and consistent with your brand or company. Recipients are more likely to open an email from a credible source. Your email's subject line should be attention-grabbing and encourage recipients to open it. It should be short, clear, and give an overview of the email's content. Consider using relevant keywords and personalizing the subject line for each recipient.Starting Price: $20 per month -
27
Mailarrow
Mailarrow
Mailarrow is an AI-powered cold email outreach software that helps companies fill their pipelines with quality leads. Convert cold prospects into warm conversations with Mailarrow. KEY FEATURES: - Unlimited Sending Mailboxes: Scale your campaigns infinitely with unlimited sending mailboxes. - Smart Inbox Rotation: Ensures your emails are sent from your group of sending mailboxes. - AI-Powered Personalization Tools: Leverage our AI-powered personalization tools to achieve higher response rates. - AI-Powered Email Warmup: Enhance and maintain high deliverability with Mailarrow's AI-powered email warmup strategy. - Integrations: Seamlessly integrate cold email into your existing processes within seconds. - Detailed Campaign Analytics: Gain valuable insights into the progress of every prospect in its outreach journey. Cold email is THE no-brainer demand generation channel your company needs to fill its pipeline to the brim. Mailarrow executes that vision to make it easy forStarting Price: $30 per month -
28
Hotsol
Hotsol
Send cold email. Start emailing your purchased B2B lists. Welcome new customers with transactional email, build credibility with newsletters, strengthen relationships with informational emails and keep customers engaged with announcements, invitations and updates. Hotsol is a bulk email service for purchased email lists. We work with small, medium and large companies to send cold email in volume on a daily basis. Whether its transactional or promotional email, our network architecture is customized to meet the specific needs of each individual client. Send cold email to purchased lists that is CAN-SPAM and GDPR compliant. Nurture your purchased lists and grow your business.Starting Price: $199 per month -
29
SmartWriter
SmartWriter
Generate 1000s of personalized emails that get you 8x more replies within minutes using AI. Never waste time researching or writing 'personalized' emails again. Automate your entire outreach process. 40x faster and 6x cheaper than humans. We automate your entire research and copywriting process in seconds so you can send emails that convert in 1 click. We find and use your prospect's online data to create punchy personalized cold emails for sales or backlinks at scale. Our personalized messages are built with proven conversion systems that convince your prospects to take action. We find unique points from your prospect's LinkedIn bio, job profile, or posts & create a complimenting personalized message. We use your prospects' case studies, awards, news articles, or blogs to create wallet-opening emails. Floor your CRM with leads by communicating with each prospect on a personal level. Create tailored emails based on your prospect's recent online activity.Starting Price: $49 per month -
30
InboxFlow
InboxFlow
InboxFlow simplifies your cold email infrastructure from the get-go. When you buy your burner domains, we automate SPF, DKIM, and DMARC setup. Plus, they're automatically redirected to your landing page, ensuring your prospects never encounter an invalid page. With your domains and email authentication sorted, it's time to supercharge your cold email campaigns. InboxFlow's user-friendly interface empowers you to configure dozens of inboxes across different domains with unprecedented ease. Spend less time on setup and more time connecting with your prospects. InboxFlow's bulk-account upload feature takes your cold email game to the next level. We provide you with a CSV file that allows you to effortlessly import and manage multiple inboxes in your favorite sending tool. Say goodbye to tedious, manual processes, and hello to streamlined efficiency. Simplify cold email infrastructure for unbeatable deliverability.Starting Price: $45 per month -
31
RepliQ
RepliQ
Make a bigger impact in less time with personalized videos all without the hassle of recording individual videos. RepliQ empowers you to connect with your audience in your cold outreach on a whole new level, delivering customized messages that drive results. Increase reply rates and book more meetings on your cold email and Linkedin campaigns within minutes. Use RepliQ to make it about them, not you. Make yourself an AI avatar by uploading a front-face image of yourself and see it come to life, or select one of our avatars. Choose a voice in your own language. RepliQ will generate your videos/images and give back a file with video links and HTML email codes that you upload to your favorite outreach tool. Transform your photo into a personalized avatar and bring yourself to life in a whole new way. Use your Linkedin profile picture and turn text into videos. RepliQ will generate the scripts for you. Creating personalized outreach videos has never been easier.Starting Price: $0.2 per video per month -
32
LeadXpertz
LeadXpertz
Tired of paying "per credit" for leads & sending cold emails? Say goodbye to credits. Join us & get unlimited access to the following: - Bulk Export Unlimited LinkedIn Emails & Phone #s - Send Unlimited Cold Emails - Warm up your email accounts - Access ~150k new businesses registered daily - 500m+ Local Businesses scraped from Google Maps - Get Contact info for anyone on LinkedIn - Find contacts from ANY website - Generate emails from a list of domains - Internal 15m+ B2B Company DatabaseStarting Price: $49 per month -
33
Instantly
Instantly.ai
Instantly scales your outreach campaigns with unlimited email sending accounts, unlimited warmup, and smart AI. Clean & verify your lead lists and ensure your domains are correctly set up for cold emailing. Our one-click bulk domain tester lets you know if your domain is missing important records. Our Campaign Builder lets you use variables, sequences and smart scheduling to maximize your deliverability and response rates. Instead of having separate campaigns for each of your sending accounts you can add all your sending accounts to one campaign. Instantly will then rotate sending emails between these accounts to make it more natural. Managing 1 inbox is easy - with Unibox you can manage tens or hundreds of inboxes simultaneously. Mark leads as positive or negative, forward or respond to them to book meetings and close deals from one simple inbox.Starting Price: $30 per month -
34
pipl.ai
pipl.ai
Sending cold emails? Our tool eliminates 90% of manual hustle. If you're like me - you're probably not happy with the current cold outreach automation tools. Too expensive. Lot's of manual hustle. Poor deliverability. We're on a mission to change that. Here's what we offer: - send campaigns from unlimited email inboxes (Yep. We don't charge you to connect extra email accounts) - unlimited warm-up for ALL your accounts - built-in prospect email verification - built-in prospect data enrichment & actualization - AI campaign and sequence assistant & full-sequence writer -
35
Charm
Charm
Charm AI is an outbound sales platform to target prospects that want what you sell -- without spamming others. Launch hyper targeted cold email campaigns to maximize your interested response rate. Charm is a full-stack solution with: 1. Lead database, better than Apollo/RocketReach 2. Custom filters for lead qualification, better than Clay 3. AI enrichments for email templates 4. Unlimited email management, warmup, and sending Perfect for founders and CEOs looking to scale their weekly meetings with qualified prospects.Starting Price: $500/month -
36
theGist
theGist
theGist lets you Cut through your work noise with personalized summaries for Gmail and Slack. Summarize Slack channel and threads, on-demand or in a Daily Digest. Clear your inbox in seconds with an actionable categorized summary of your Gmail, directly from Slack. We don't change anything in your Gmail unless you actively do it yourself. Our AI quickly goes over your unread emails and clusters them out according to some easy-to-understand categories such as Promotional, Apps, Newsletters, and more. The Priority category is where your important emails will be. Each one is summarized for you, allowing you to quickly reply, ‘archive’ and more actions on each. In the other categories, you will get a summary of the category or subcategory of emails (e.g under Social you will see all the emails you got from Twitter, Facebook, etc.. that are clustered together and summarized) with batch actions like ‘mark as read’ to help you clear out non-important emails fast.Starting Price: $4.99 per user per month -
37
360Airo
360Airo
360Airo is an AI-powered outreach platform that helps businesses turn cold prospects into real conversations. We combine lead enrichment, multichannel automation, and AI personalization to help teams scale outreach across Email, LinkedIn, SMS, and Calls—without losing the human touch. Built for teams that want more replies, more meetings, and faster pipeline growth with less manual work. Connect. Engage. Grow Smarter with 360Airo.Starting Price: $29/month -
38
SharedBox
Everygood
Manage customer support and communication directly from Slack. Send and receive emails, tweets and direct messages in Slack. Collaborate effectively on shared email and twitter accounts like support@your.domain without sharing passwords among team members. SharedBox connects to your Twitter account and any email you currently use. You can also get an @in.sharedbox.app email you can setup forwarding to. Twitter mentions, DMs and incoming emails to your connected email or your in.sharedbox.app email gets delivered to your preferred Slack channel. Review with your team and reply once ready. Every account comes with a support site your users can send and manage their support requests from. You get a free supportby.email subdomain and can also use your custom domain. No new installation or application required. Use a tool your team is already familiar with—Slack. Add multiple emails and Twitter accounts to your Slack workspace.Starting Price: $19.00/month -
39
Right Inbox
Ramp Ventures
Have clients in different timezones? Feel inspired at night but only want your email to land the next morning? Our schedule emails to send later feature solves this issue. With Right Inbox, you can write emails at a time that works for you, then have them sent at a time that works for your recipients. You can schedule emails using your recipient’s time zone to ensure they arrive at just the right time. Write follow-ups beforehand and schedule to send them if recipients don’t reply to your first email. When they do, follow-ups are automatically cancelled. Right Inbox’s email sequences feature ensures you never miss a follow-up again. Automate your outreach with email sequences in Gmail. We often have to wear different hats when dealing with email. There is no email signature that fits all. With Signatures, you can create multiple signatures in Gmail and apply the perfect one for every situation with one click. Switch between signatures without leaving your editor in Gmail.Starting Price: $5.95/month/user -
40
UMPTEEN
UMPTEEN
Sales and Marketing platform for small businesses: Cold Email + Email Marketing + CRM. - Free Plans for most features - Professional Services available to help businesses get the highest ROIStarting Price: $24/month/user -
41
MunelMail
MunelMail
MunelMail is the ultimate tool for founders, marketers, and sales professionals who want their cold emails to actually get responses. Powered by advanced AI, Munelmail doesn’t just generate mass messages—it crafts personalized outreach that feels human, relevant, and timely. By intelligently leveraging LinkedIn data, MunelMail helps you understand your prospects on a deeper level—what they care about, what they’re talking about, and when they’re most likely to engage. This means every email you send is laser-targeted, context-aware, and built to spark real conversations—not ignored or marked as spam. Whether you're looking to book more meetings, grow your pipeline, or build meaningful relationships at scale, MunelMail is your secret weapon for turning cold outreach into warm leads—fast and efficiently.Starting Price: $24.99/month -
42
Overloop
Overloop
We've built all the features you need to run multi-channel outbound campaigns, start more conversations, and close more deals. Our powerful algorithm will find missing email addresses and automatically enrich your contacts. Organize your contacts in lists, but also using our dynamic smart segments. Your business is unique, this is why we allow you to personalize Overloop with custom fields. Connect your LinkedIn account, and automate profile visits, connection requests, and even direct messages. Track opens, clicks, visits, bounces, replies, and even out-of-office or automatic replies. Send your emails as replies to your previous emails. Generate more revenue and spend less time on repetitive tasks by setting up powerful workflows using a simple, visual interface. Tasks are powerful to get things done. Create different kinds of tasks depending on your needs: action, call, email, etc.Starting Price: $99 per user per month -
43
Mailscale
Mailscale
Mailscale is a software that helps you generate up to 1000 email accounts. As a result, you can send cold emails at scale and get more clients than you can handle. The simple reason you’re not getting enough clients is that you’re not being seen. Your next 100 clients are literally an email away. Sending cold emails at scale is a hassle, to not land in the spam, you need to create dozens of them. Mailscale automates email account creation faster & cheaper. We can help you create your virtual sales force of 50 or 1000 email accounts in minutes. Manually set up domains, email accounts, DMARC, DKIM, SPF, domain forwarding, and email forwarding. Let Mailscale generate email accounts for you, then add them to your email-sending tool with a single click. Mailscale helps more than 500 agency owners, freelancers, and software founders to get more clients. Buy secondary domains inside of Mailscale, fill out a 5-minute form, and get your CSV of ready-to-use email accounts by tomorrow.Starting Price: $79 per month -
44
Replyify
Replyify
Automate Your Cold Emails & Follow-ups. Put your sales process on autopilot with effortless drip marketing. Built for companies, large and small, Replyify is free to start and affordable as you grow. A modern sales platform to automate your Account Based Marketing and create more opportunities. Drip email campaign sequences are the most efficient way for Account Executives, Sales Development, Demand Generation, Recruiters, Financial Planners, VPs and CEOs to close more deals. Replyify automates your pipeline activities to match the way you sell in real life with emails, phone calls and social selling. Connect ANY email account (Gmail, Office365 & more). We're integrated directly with Salesforce CRM. (Zapier too!!) Emails are automatically customized with the prospect's info and sent right from your inbox, not ours (psst-this increases deliverability). Send more prospecting emails, book more meetings, and close more deals with an All-In-One Platform you and your team will actually use.Starting Price: $19 per month -
45
Autoklose
Autoklose
Close more deals faster. Sales engagement platform and B2B data all-in-one. Built for entrepreneurs, sales, and marketing, Autoklose helps you and your teams. Target the right prospects by utilizing our huge database packed with clean, verified B2B leads from different industries and applying a number of different powerful filters. Engage your prospects and convert them into loyal customers by sending out sequences of highly tailored emails at scale, fine-tuning your campaigns real time, and automating your sales process. Grow your business by managing your teams, monitoring the performance of your campaigns and each individual team member, analyzing reports directly from your dashboard. Monitor your rates – sent, delivery, bounce. Track your KPIs opens, clicks, replies and take smart action. Access your campaign stats instantly. Track your sent, delivery, open, click-through, reply, and bounce rates. Easily predict customer engagement patterns and behaviors and more.Starting Price: $49.99/month/user -
46
MailRush.io
Cyber Cast International
We help businesses integrating Email Marketing channel for customer base growth. We do this by automating best practices for sending Email Marketing and by providing effective tools and metrics for long term outreach campaigns. The growth of your business depends on a steady stream of prospects. Stream Cold Email campaigns into your grow path with MailRush's Email Automation. Control your sending reputation with a dedicated IP. Maximize effectiveness by bundling multiple dedicated IP accounts. This means that you will not need external email accounts for sending your cold email campaigns. We automate your campaigns to avoid impacting negatively recipient servers by using email marketing best practices protecting the reputation of your domain and IP address. Start testing our Email Marketing Campaign Software with a free 1000 Email credit and unlimited subscribers. Start sending in minutes with one of the best email campaign tools.Starting Price: $50 per month -
47
SharedInbox
SharedInbox
Manage customer support and communication directly from Slack. Collaborate effectively on shared emails like support@your.domain without sharing passwords among team members. SharedInbox connects to any email you currently use. You can also get an @in.sharedinbox.co email you can setup forwarding to. Just hit the command SharedInbox /compose and send emails to anyone. On any email thread, Just hit Reply Mail. Each incoming or outgoing email creates a new Slack Message Thread, easily tag teammates and discuss. Every account comes with a support site your users can send and manage their support requests from. No new installation or application required. Use a tool your team is already familiar with Slack. Know when your email is delivered and when it is opened. See files and pictures attached to your emails directly in Slack. Create a custom signature to attach to your emails. Set a custom message that is automatically sent once you get an email.Starting Price: $5 per month -
48
Klenty
Klenty
Klenty is a sales engagement platform that can help sales teams reach out to prospects by sending personalized emails and automated follow-ups at scale. Using Klenty, you can automate all the repetitive activities involved in your sales process like sending cold emails, follow-ups, tracking engagement metrics, etc - so that you can focus more on activities like building relationships and closing deals. Klenty has native integration with many of the popular CRM's like Pipedrive, Salesforce, Zoho, Hubspot, etc. that will help your teams automate the entire sales workflow and save your team hours every week.Starting Price: $30 per user per month -
49
Quickfix AI
Quickfix AI
Quickfix AI is your personal writing assistant that lives right inside your browser. It reads the conversation you’re looking at and instantly crafts a reply that sounds natural, thoughtful, and on point. No need to copy, paste, or jump between tabs—Quickfix works everywhere you write: Gmail, LinkedIn, Reddit, Slack, Zendesk, social media, and more. One extension powers them all. Here’s how it works: click the Quickfix icon, hit Generate Reply, and choose Insert. In just a few seconds, you’ve got a polished response written for you—ready to send or tweak as you like. It’s more than a text generator—it’s a productivity superpower. Quickfix can also rewrite your drafts, fix tone and grammar, or transform clunky text into clear, confident writing. Forget the friction of writing the same things over and over. With Quickfix AI, every reply feels effortless, authentic, and fast—so you can focus on the conversation, not the keyboard.Starting Price: $9/month/user -
50
QuickMail
QuickMail.io
Our software improves deliverability & automates follow-ups so you get more replies with less effort. Create manually, use the contact form or import bulk prospects using CSV or Google Drive spreadsheets. Maximize your workflow by automatically importing your Google Drive spreadsheet whenever it is changed. Maximize your open & reply rate by making every email stand out with personalization. Create your own attributes/merge tag. Add variations with A/B Testing and dynamic text to improve deliverability and improve your reply rate. Wake up each day to find new leads, directly in your inbox, by building a predictable pipeline. We take prospects who replied automatically out of the campaign and reach out again later when they are out of the office. Spam filters are getting smarter each year. Our solution monitors and maintains the health of your inbox with our advanced auto-warmer technology so your emails have a greater chance to land in your recipient’s inbox.Starting Price: $49 per month
