A lifetime deal is a one-time payment for permanent access to a tool, and AppSumo is the platform that made the format standard for email marketing software. The catch is that these deals expire. A deal that was live last year is usually a sold-out archive page today, which is why most lifetime deal roundups send you to dead links.
We rechecked the six deals listed on this page on September 18, 2026. Two are still buyable: SendFox at $29 and SalesBlink at $79, both one-time payments on AppSumo. Sensorpro still runs an offer, but it is a discounted monthly rate locked for life, not a one-time payment. Instantly.ai, SMTPing and Hexospark have all sold out. The ended deals stay documented below, because they show what these tools were priced at and what to watch for if the offers come back. If you only need a free tier rather than a one-time purchase, see our list of free email marketing platforms.
| Tool | Status on September 18, 2026 | Entry price | What it is for |
|---|---|---|---|
| SendFox | Live on AppSumo | $29 one-time (list $480) | Newsletters: 5,000 contacts, 300,000 lifetime sends |
| SalesBlink | Live on AppSumo | $79 one-time for 1 code (list $600) | Cold email sequences and AI-written outreach |
| Sensorpro | Live, but not a one-time deal | $9 per month locked for life with code LTD, regularly $19 per month | Campaigns, segmentation, dynamic content |
| Instantly.ai | Ended, sold out on AppSumo | Not purchasable | Cold email and inbox warmup |
| SMTPing | Ended, sold out on AppSumo | Not purchasable | Email validation |
| Hexospark | Ended, sold out on AppSumo | Not purchasable | Cold email and personalization |
Three of the six are cold email tools rather than newsletter platforms. If that is what you are shopping for, the subscription market is compared in our roundup of cold email software.
Key Takeaways
- SendFox: still live at $29 one-time. Best for plain newsletters, with 5,000 contacts and 300,000 lifetime sends.
- SalesBlink: still live at $79 one-time for a single code. Cold email sequences with AI writing and multi-channel follow-up.
- Sensorpro: the offer is still open, but it locks a $9 per month rate for life instead of selling a one-time license.
- Instantly.ai, SMTPing and Hexospark: all three AppSumo listings are sold out and cannot be bought at any price today.
- Check before you buy: an AppSumo listing stays online after the offer closes, so an archived deal page looks identical to a live one until you reach the checkout button.
About Email Marketing Lifetime Deals
Email Marketing Lifetime Deals (also commonly named LTD) can be a great way for businesses to access powerful email marketing tools at a fraction of the cost. These deals typically offer a one-time payment for lifetime access to the software, making it a cost-effective solution for companies looking to enhance their email marketing efforts.
Instantly.ai Lifetime Deal (Ended)
This deal has ended. The Instantly.ai listing on AppSumo now returns “This deal is unavailable” and shows every tier as sold out, checked on September 18, 2026. Instantly is still sold as a subscription on its own site. The description below is kept as a record of what the lifetime tiers covered.
One of the standout features of Instantly.ai is its advanced email sequence capabilities, which allow users to design and implement highly personalized email campaigns effortlessly. This functionality supports the creation of targeted messages that can adapt to user behavior and preferences, thereby greatly improving open and click-through rates.
Additionally, Instantly.ai integrates seamlessly with a variety of Customer Relationship Management (CRM) systems and other marketing tools, ensuring a cohesive and all-encompassing marketing strategy.
The lifetime tiers were priced from $79 and covered 20,000 monthly emails with 5,000 active leads at the entry level, rising to 100,000 monthly emails with 25,000 active leads at the top tier, with unlimited email accounts and warmup on all of them. Instantly.ai also provides robust analytics and reporting features, enabling businesses to monitor their campaigns in real-time and make data-driven decisions that enhance overall marketing effectiveness.
If the deal returns, the AppSumo listing is the place it will reappear. Until then, the only way to buy Instantly is its regular subscription.
- Instantly.ai Review
- Instantly.ai Main Feature: Cold Email
- Instantly.ai Lifetime Deal status: sold out on AppSumo, checked September 18, 2026
- Former lifetime deal pricing: from $79, no longer purchasable
- Alternative to: Saleshandy, Mailshake
SMTPing Email Validation Lifetime Deal (Ended)
This deal has ended. The SMTPing Email Validation listing on AppSumo shows “Sold out” and “This deal is unavailable”, checked on September 18, 2026. The entry tier covered 30,000 email validation credits per month with lifetime access to current and future integrations. SMTPing is still available directly at smtping.com, on per-credit plans rather than a one-time licence. SMTPing is designed to guarantee that your emails reach the intended recipients’ inboxes, maximizing the effectiveness of your marketing efforts. The platform leverages advanced algorithms and a reliable SMTP infrastructure to enhance email deliverability, reducing the risk of emails being flagged as spam.
One of the standout features of the SMTPing Lifetime Deal is its cost-effectiveness. By opting for a lifetime deal, businesses can greatly reduce ongoing expenses associated with email marketing, freeing up resources for other critical operations. Additionally, SMTPing provides detailed analytics and reporting tools, allowing businesses to track the performance of their campaigns in real-time and make data-driven decisions.
Furthermore, SMTPing’s user-friendly interface makes it accessible for businesses of all sizes, from startups to large enterprises. The intuitive dashboard simplifies the process of setting up and managing campaigns, ensuring even those with limited technical expertise can effectively utilize the platform.
- SMTPing Review
- SMTPing Main Feature: Email Validation
- SMTPing AppSumo listing: sold out, checked September 18, 2026
- Former lifetime deal pricing: from $39, no longer purchasable; current pricing is per credit at smtping.com
- Alternative to: Zerobounce, NeverBounce
SendFox Lifetime Deal (Live, $29)
Leveraging the power of simplicity and efficiency, the Sendfox Lifetime Deal offers an intuitive solution for businesses looking to streamline their email marketing campaigns. Designed with user-friendliness in mind, Sendfox allows marketers to create, schedule, and automate email campaigns effortlessly. The platform’s drag-and-drop editor makes it easy to design professional-looking emails without the need for advanced technical skills.
Sendfox integrates seamlessly with popular tools such as WordPress, Zapier, and various social media platforms, enhancing its versatility. The email automation feature empowers businesses to set up drip campaigns, ensuring consistent engagement with their audience. Additionally, Sendfox provides detailed analytics, offering insights into open rates, click-through rates, and subscriber growth. This data-driven approach helps businesses refine their strategies for best results.
Current terms, checked September 18, 2026: one code costs $29 against a $480 list price, and covers 5,000 contacts, 300,000 lifetime email sends, unlimited automations and unlimited landing pages, with a 60 day refund window. The limit to watch is the lifetime send cap rather than the contact count: 300,000 sends is roughly 60 campaigns to a full 5,000 contact list, after which you need another code. This makes it an attractive option for startups, small businesses, and independent creators who seek a robust email marketing solution without breaking the bank.
- Sendfox Review
- Sendfox Main Feature: Mass Email
- Sendfox Lifetime Deal URL
- SendFox Lifetime Deal pricing: $29 one-time, list price $480, checked September 18, 2026
- Alternative to: ConvertKit, Beehiv, Substack
Hexospark Lifetime Deal (Ended)
This deal has ended. The Hexospark listing on AppSumo shows “Sold out” and “This deal is unavailable”, checked on September 18, 2026. The description below records what the offer covered. Hexospark offers a robust suite of features designed to streamline email campaigns, optimize performance, and guarantee high engagement rates. The platform employs advanced automation tools that enable users to create personalized email sequences and follow-ups, greatly boosting conversion rates.
One of Hexospark’s standout features is its AI-driven analytics, which provides actionable insights into email performance. This allows businesses to fine-tune their strategies based on real-time data, making sure that each campaign is more effective than the last.
Additionally, Hexospark’s user-friendly interface makes it accessible for both seasoned marketers and novices alike, reducing the learning curve and enabling quick implementation.
The lifetime tiers started at $69. They are no longer purchasable, and Hexospark is now sold on its own subscription pricing.
- Hexospark Review
- Hexospark Main Feature: Cold Email, compared against live subscription options in our cold email software roundup
- Hexospark Lifetime Deal URL
- Former lifetime deal pricing: from $69, no longer purchasable
Sensorpro Lifetime Deal (Live, but a locked rate)
Read the terms before you count this as a lifetime deal. Sensorpro’s offer, checked on September 18, 2026, is 15,000 emails per month at $9 per month held for life with the code LTD, against a regular $19 per month. You keep paying every month; what is locked is the rate, not the access. That is a different product from a one-time payment, and it is the only offer of the six that works this way. With that said, the platform itself is a versatile email marketing solution designed to cater to the diverse needs of modern businesses. This all-encompassing platform stands out with its robust suite of features aimed at enhancing customer engagement and driving conversions.
Key functionalities include advanced segmentation, which allows marketers to tailor their campaigns based on specific customer behaviors and preferences. This degree of customization guarantees higher open rates and more effective communication.
In addition to segmentation, Sensorpro offers dynamic email content features, enabling the creation of personalized messages that resonate with individual recipients. The platform’s intuitive drag-and-drop editor simplifies the design process, making it accessible even to those without technical expertise.
For data-driven decision-making, Sensorpro provides in-depth analytics and reporting tools, giving users insights into campaign performance and customer interactions.
Moreover, Sensorpro integrates seamlessly with various CRM systems and e-commerce platforms, enhancing its utility in different business environments. The automation capabilities streamline repetitive tasks, allowing marketers to focus on strategy and creativity.
With a focus on security and compliance, Sensorpro guarantees that all email campaigns adhere to industry regulations, providing peace of mind for businesses operating in sensitive sectors.
- Sensorpro Review
- Sensorpro Main Feature
- Sensorpro Lifetime Deal URL
- Sensorpro offer pricing: $9 per month locked for life with code LTD, regularly $19 per month, for 15,000 emails per month, checked September 18, 2026
- Alternative to: SC-Network Evalanche
SalesBlink Lifetime Deal (Live, $79)
SalesBlink Lifetime Deal offers an all-in-one platform designed to streamline and optimize the sales outreach process for businesses of all sizes. This versatile tool is engineered to enhance the efficiency of your sales funnel, from lead generation to closing deals.
With its user-friendly interface, SalesBlink integrates various functions such as email marketing, cold outreach, and follow-up sequences, all within a single platform.
One of the standout features of SalesBlink is its ability to automate personalized email campaigns. This guarantees that each communication is tailored to the recipient, greatly improving engagement rates. Additionally, the platform includes robust tracking and analytics tools, providing valuable insights into campaign performance, open rates, and response metrics. These data-driven insights allow businesses to refine their strategies and achieve better results.
SalesBlink also supports multi-channel outreach, incorporating emails, calls, and LinkedIn messages into a cohesive strategy. Current terms, checked September 18, 2026: one code is $79 against a $600 list price, an 87 percent discount, with a 60 day refund window. The deal stacks: two codes cost $158, and the ladder runs to ten codes at $790. Stacking is how you raise the sending and prospect limits, so work out the volume you need before buying a single code.
- SalesBlink Main Feature: Cold Email
- SalesBlink Lifetime Deal URL
- SalesBlink Lifetime Deal pricing: $79 one-time for one code, list price $600, stacking to $790 for ten codes, checked September 18, 2026
- Alternative to: Instantly
Final Words
The honest summary of this recheck is that the lifetime deal market for email software has thinned out. Of the six offers on this page, two are still one-time purchases: SendFox at $29 and SalesBlink at $79. Sensorpro sells a locked monthly rate rather than a licence, and three listings are archived.
That pattern is worth knowing before you shop. AppSumo leaves closed listings online, so an archived page looks exactly like a live one down to the tier tables; the only reliable signal is the “This deal is unavailable” banner near the buy button. Roundups that were written once and never rechecked will send you to three of those.
Pairing two tools still works well: a validation tool to clean the list, and a sending tool to run the campaign. For validation, SMTPing now sells per-credit plans rather than a lifetime licence. For sending, SendFox covers newsletters and SalesBlink covers outbound.
One caution that applies to every one-time deal: a lifetime licence lasts as long as the vendor does, and the limits are fixed at purchase. Check the cap that will bind first, which is the lifetime send count on SendFox and the stacking ladder on SalesBlink, and buy for the volume you expect rather than the volume you have today. Prices and availability on this page were verified on September 18, 2026.
About the Author
Alaa · LinkedIn
Email infrastructure specialist with 8+ years of hands-on experience in SMTP, deliverability, and email verification. I’ve configured and troubleshot mail systems across Postfix, Exchange, and cloud relays, managed IP reputation and warmup campaigns, and built verification pipelines processing millions of addresses. My work spans DNS authentication (SPF, DKIM, DMARC, BIMI), bounce handling, blocklist monitoring, and compliance frameworks including CAN-SPAM and GDPR. I write every article on SMTPedia to give email professionals, developers, and marketers the accurate, RFC-grounded reference they need.
About SMTPedia
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