
Sortfully
Sanebox
Clean Email
Mailstrom
InboxAlly
Warmy.io
Warmbox.ai
Folderly
Mailwarm
Warmup Inbox
MailReach.co
lemlist
Sortfully is an automatic filing service for Outlook and Microsoft 365. It moves each message into an Inbox subfolder, or tags it with a coloured category, based on the organisation that sent it. By default a message is only filed once you have read it, so new mail still lands in front of you and nothing disappears unseen. If you prefer, filing can happen instantly on delivery instead.
There is no AI in Sortfully. No model, no classifier, no LLM, and your mail is never sent to any AI service. Filing runs on deterministic rules you can read and edit: the sender's domain, your exact-match overrides, then Public Suffix List normalisation, so notifications.slack.com and hello@slack.com both land in one Slack folder, and .co.uk domains get correct names. You can group several domains into one folder, pin a domain to a folder you already have, exclude senders entirely, and choose move-or-tag per organisation. Every action is reversible.
Privacy is structural, not a promise. Sortfully never reads message bodies or attachments: the one code path allowed to call Microsoft Graph message endpoints uses a strict metadata field allow-list, and a CI gate fails the build if a content field ever appears. An optional detailed audit log records the subject line so you can see exactly what was filed; you can switch it off. Sortfully connects through delegated Microsoft Graph permissions only (Mail.ReadWrite, Mail.ReadWrite.Shared, MailboxSettings.Read), is a verified Microsoft publisher, and reads your existing inbox rules without ever modifying them. Tokens are encrypted at rest and you can disconnect at any time.
Optionally, a chunked, throttle-safe backlog cleanup sorts the mail you already have, with protected folders and a leave-recent-mail window so nothing current is touched.
Sortfully is built for Microsoft 365 first: individual mailboxes, shared mailboxes, and a Business plan with team management for firms. It is operated by a UK company, hosted in the EU.
InboxAlly is an email deliverability tool that helps email marketers stop their emails from landing in spam. This results in drastically higher open and click-through rates. It is used to warm up domains and IPs and fix existing sender domain reputation problems. Customers typically get out of spam and see their open rates more than double in 4 to 14 days. Our tool works with any sending platform.
Users login to their dashboard to select their engagement settings and to download a set of seed emails. Our engagement with these seed email accounts happens according to the user's engagement settings to keep/pull them out of the spam folder and promotions tab, and direct them into the primary inbox. These interactions literally teach mailbox providers like Gmail, GSuite, Hotmail, and Yahoo not to send your real emails to the spam or the promotions folder. Deliverability improvements can be measured over time via our analytics and reports.
Sortfully
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Sortfully's answer
Sortfully contains no AI at all. Filing runs on deterministic rules you can read and edit: the sender's domain, your overrides, then Public Suffix List normalisation. And the privacy guarantee is structural rather than promised: the one code path allowed to call Microsoft Graph message endpoints uses a strict metadata allow-list, and a CI gate fails the build if a content field ever appears. Message bodies and attachments are never read.
InboxAlly's answer:
InboxAlly is unique in its specialized focus on email deliverability, offering a comprehensive suite of services to ensure your emails reach the inbox. As an email warmup and reputation repair service, our main strength lies in enhancing sender reputation and improving email placement outcomes. We do not send emails; instead, we support your efforts by making sure your emails are more likely to avoid spam folders.
Our platform also features an email placement tester, allowing you to evaluate and enhance where your emails land. Additionally, our DMARC reporting services provide crucial insights into authentication and compliance, while email list verification ensures you’re reaching quality contacts.
What sets InboxAlly apart is our all-in-one platform, designed as a super tool for email deliverability experts and high-volume email senders. With our advanced technology and user-friendly interface, we empower users to tackle deliverability challenges head-on. By focusing solely on enhancing deliverability through multiple specialized services, InboxAlly ensures you maintain strong engagement and maximize your email strategy’s impact.
Sortfully's answer
Businesses and normal consumers can both benefit from Sortfully. Businesses on Microsoft 365, mainly professional services firms of 10 to 200 mailboxes (accountants, solicitors, surveyors, architects) and the IT admins or MSPs who manage their tenants. It also suits compliance-conscious firms that have decided against AI email tools, and individual Outlook power users.
InboxAlly's answer:
Our primary audience at InboxAlly is composed of email deliverability experts and high-volume email senders who are keen on optimizing their email campaigns for maximum reach and engagement. These users range from digital marketing professionals and businesses with substantial email outreach needs to email service providers seeking to improve client deliverability outcomes.
Our services are particularly valuable for those responsible for maintaining and enhancing sender reputation. They are often tasked with ensuring that their organization’s communications land in the recipient's inbox rather than the spam folder. These users depend heavily on our email warmup and reputation repair services to accomplish this goal.
Additionally, technology and compliance teams use our platform for its robust DMARC reporting services and email list verification capabilities. These components help ensure compliance, maintain data integrity, and manage sender reputations effectively.
Overall, our primary audience appreciates the comprehensive toolset that InboxAlly offers, which is specifically tailored to address the nuanced challenges of email deliverability. By enabling users to achieve better placement, minimize bounce rates, and ensure compliance, InboxAlly empowers them to maximize the effectiveness of their email strategies.
Sortfully's answer
Sortfully was built by a UK founder who watched Outlook rules fail at scale: Exchange caps rules at 256 KB, one rule per sender domain does not scale, and rules only run while Outlook is open. The alternatives all wanted AI access to mail content, which is exactly what regulated firms cannot accept. So Sortfully does the opposite: deterministic filing by sender organisation, with a code-enforced guarantee that message bodies and attachments are never read. It launched in August 2026, operated by a UK company with EU hosting.
InboxAlly's answer:
InboxAlly, founded in 2019, was created to tackle the challenges of email deliverability. The platform integrates seamlessly with existing email services and marketing automation platforms, providing a streamlined experience for businesses that send high volumes of emails.
The company is led by Darren Blumenfeld, Founder and CEO, and Shubhneet Goel, Co-founder and CTO. Darren, with a rich background in technology and entrepreneurship, brings insights from his experience with HonestMail and NASA. Shubhneet's technical acumen, honed over a decade, is key to the platform's innovative edge.
Together, they lead a team committed to continuous innovation and excellence, ensuring InboxAlly remains a leader in the competitive SaaS email deliverability landscape.
Sortfully's answer
Laravel (PHP), PostgreSQL and Redis on the backend; React with TypeScript and Inertia on the frontend; the Microsoft Graph API with delegated permissions for all mailbox access. Hosted in the EU.
InboxAlly's answer:
At InboxAlly, our focus on enhancing email deliverability is powered by a robust technological framework. We utilize a combination of cloud-based solutions and machine learning algorithms to deliver our powerful email warmup, reputation repair, and email placement tester services. This ensures flexibility and scalability, accommodating various user needs efficiently.
Our platform is built on a strong foundation using modern programming languages and frameworks such as Python enabling rapid development and seamless integration capabilities. These technologies support our advanced email analytics and DMARC reporting, providing users with insightful data and actionable recommendations.
In summary, InboxAlly's product is built with cutting-edge technologies that prioritize performance, security, and user-friendliness, positioning us as a leader in the email deliverability space.
InboxAlly's answer:
As a provider of advanced solutions in email deliverability, InboxAlly is proud to be trusted by a diverse array of businesses across various sectors. Our platform is utilized by major digital marketing agencies that require reliable email warmup and reputation repair services to maintain the effectiveness of their large-scale campaigns.
We also support several well-known e-commerce platforms that depend on consistent inbox placement to reach their customers with promotional and transactional emails. Additionally, well-established technology companies leverage our email placement tester and DMARC reporting services to ensure that their communications are both secure and effective.
In the realm of education, renowned institutions have adopted our email list verification services to ensure their communications with students and faculty maintain high engagement and accuracy.
Our commitment to providing a seamless experience and enhancing email deliverability makes InboxAlly an invaluable tool across multiple industries, meeting the needs of high-volume email senders from startups to large enterprises. Our clients continually commend us for helping them achieve optimal email performance and seamless integration into their existing workflows.
Sortfully's answer
Most email organisers ask you to trust them: an AI classifier scores your mail and a privacy policy promises restraint. Sortfully is built so you don't have to take its word for it. It cannot read message bodies or attachments; the restriction is a code-level allow-list backed by a CI gate that fails the build, and filing runs on deterministic rules you can read and override. It is also the only one of its kind built for Outlook and Microsoft 365 first: delegated Microsoft Graph permissions from a verified Microsoft publisher, shared mailbox support, and read-only respect for your existing inbox rules, where SaneBox, Clean Email and Mailstrom treat Outlook as a second platform. And it behaves differently: mail is filed by sender organisation, so every alias and subdomain lands in one folder, and by default only after you have read it, so nothing disappears unseen and everything can be undone.
InboxAlly's answer:
Selecting InboxAlly over competitors is a strategic choice for those focused on optimizing email deliverability with comprehensive and innovative services. Our platform offers 360-degree services specifically designed to repair damaged sender domains, assist in ESP migration, and more. We stand out with our extensive network of thousands of seed emails, which are essential for clients who send hundreds of thousands of emails daily.
We enhance deliverability through up to eight distinct engagement actions per seed email, performing natural actions on the graphical interfaces of various email service providers. Our custom content and scheduling features ensure emails are sent at optimal times for maximum impact.
Security is at the forefront of our offerings, and our built-in inbox placement testing provides real-time feedback. We also offer a free 10-day trial, allowing access to all features with support from our 24/7 customer service team for onboarding and any questions.
Our platform includes engagement rules presets and advanced reporting and analytics to monitor campaign success, with seamless integrations with popular email service providers. This makes InboxAlly an indispensable tool for email deliverability experts seeking a comprehensive, effective solution.
We were able to significantly increase our email deliverability rates using Inboxally. Deliverability is one of the core issues that we have to constantly deal with. Now we have a tool that actually solves this for us.
Inboxally is a clever tool that helps to make out outreach campaigns way more effective. We've managed to improve our open rates and convert more emails after using the product. It's easy to set up and you don't have to do anything once it's configured.
InboxAlly is a very clever, strategic and successful tool for us to assist clients with their deliverability and onboarding challenges. The company has been flexible in working with us to fine-tune how we use it, which is very refreshing in this day and age of SaaS services. Bottom line is this; it works! Through no fault of their own, our clients might experience dips in inboxing and InboxAlly straight-away gives them deliverability boosts within a few days or weeks
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Warmy.io - We don't send emails. We get them seen.
Clean Email - Clean Email is an online service that empowers you to take control of your mailbox.
Warmbox.ai - Warm up your cold email inbox, and never land in spam anymore!
Mailstrom - The smarter, faster way to clean out your inbox. Power through thousands of messages in just a few clicks. Free Trial! Website. JOBS.
Folderly - Folderly is an all-in-one email deliverability platform to supercharge your email performance. Locate, solve, prevent email deliverability pitfalls, and ensure that your emails reach the Inbox folder.